Audio session error in logs

[foobar8675]

Hi Halle,

When stopping a session, I’m noticing on my iphone5 running ios9 that things seem a bit slower than before. When digging through the logs, I noticed this

Deactivating an audio session that has running I/O. All I/O should be stopped or paused prior to deactivating the audio session.
2015-10-06 09:21:33.244 mywordbug[1235:531511] Error: couldn’t set session inactive.: ‘!act’
2015-10-06 09:21:33.244 mywordbug[1235:531511] Error: there was a problem tearing down the audio session: Error Domain=NSOSStatusErrorDomain Code=560030580 “(null)”.

I’m not sure if that would be contributing to the slowness, so I thought I’d ask. let me know if you want me to set up a test project for replication. Below are the logs with verbose turned on

— entire logs —

Open to read more

INFO: cmd_ln.c(703): Parsing command line:
sphinx_lm_convert \
-i /var/mobile/Containers/Data/Application/A64059C1-2A4E-43F8-859E-9CEA06BFD92A/Library/Caches/NameIWantForMyLanguageModelFiles.arpa \
-o /var/mobile/Containers/Data/Application/A64059C1-2A4E-43F8-859E-9CEA06BFD92A/Library/Caches/NameIWantForMyLanguageModelFiles.DMP

Current configuration:
[NAME] [DEFLT] [VALUE]
-case
-debug 0
-help no no
-i /var/mobile/Containers/Data/Application/A64059C1-2A4E-43F8-859E-9CEA06BFD92A/Library/Caches/NameIWantForMyLanguageModelFiles.arpa
-ifmt
-logbase 1.0001 1.000100e+00
-mmap no no
-o /var/mobile/Containers/Data/Application/A64059C1-2A4E-43F8-859E-9CEA06BFD92A/Library/Caches/NameIWantForMyLanguageModelFiles.DMP
-ofmt

INFO: ngram_model_arpa.c(503): ngrams 1=252, 2=500, 3=250
INFO: ngram_model_arpa.c(135): Reading unigrams
INFO: ngram_model_arpa.c(542): 252 = #unigrams created
INFO: ngram_model_arpa.c(195): Reading bigrams
INFO: ngram_model_arpa.c(560): 500 = #bigrams created
INFO: ngram_model_arpa.c(561): 3 = #prob2 entries
INFO: ngram_model_arpa.c(569): 3 = #bo_wt2 entries
INFO: ngram_model_arpa.c(292): Reading trigrams
INFO: ngram_model_arpa.c(582): 250 = #trigrams created
INFO: ngram_model_arpa.c(583): 2 = #prob3 entries
INFO: ngram_model_dmp.c(518): Building DMP model…
INFO: ngram_model_dmp.c(548): 252 = #unigrams created
INFO: ngram_model_dmp.c(649): 500 = #bigrams created
INFO: ngram_model_dmp.c(650): 3 = #prob2 entries
INFO: ngram_model_dmp.c(657): 3 = #bo_wt2 entries
INFO: ngram_model_dmp.c(661): 250 = #trigrams created
INFO: ngram_model_dmp.c(662): 2 = #prob3 entries
2015-10-06 09:21:27.350 mywordbug[1235:531511] Done creating language model with CMUCLMTK in 0.084216 seconds.
2015-10-06 09:21:27.469 mywordbug[1235:531511] I’m done running performDictionaryLookup and it took 0.102218 seconds
2015-10-06 09:21:27.475 mywordbug[1235:531511] I’m done running dynamic language model generation and it took 0.296373 seconds
2015-10-06 09:21:27.476 mywordbug[1235:531511] Starting OpenEars logging for OpenEars version 2.041 on 32-bit device (or build): iPhone running iOS version: 9.000000
2015-10-06 09:21:27.477 mywordbug[1235:531511] Attempting to start listening session from startRealtimeListeningWithLanguageModelAtPath:
2015-10-06 09:21:27.477 mywordbug[1235:531511] User gave mic permission for this app.
2015-10-06 09:21:27.478 mywordbug[1235:531511] setSecondsOfSilence wasn’t set, using default of 0.700000.
2015-10-06 09:21:27.478 mywordbug[1235:531511] Successfully started listening session from startRealtimeListeningWithLanguageModelAtPath:
2015-10-06 09:21:27.478 mywordbug[1235:531741] Starting listening.
2015-10-06 09:21:27.480 mywordbug[1235:531741] about to set up audio session
2015-10-06 09:21:27.481 mywordbug[1235:531741] Creating audio session with default settings.
2015-10-06 09:21:28.464 mywordbug[1235:531741] done starting audio unit
INFO: cmd_ln.c(703): Parsing command line:
\
-lm /var/mobile/Containers/Data/Application/A64059C1-2A4E-43F8-859E-9CEA06BFD92A/Library/Caches/NameIWantForMyLanguageModelFiles.DMP \
-vad_prespeech 10 \
-vad_postspeech 69 \
-vad_threshold 2.000000 \
-remove_noise yes \
-remove_silence yes \
-bestpath yes \
-lw 6.500000 \
-dict /var/mobile/Containers/Data/Application/A64059C1-2A4E-43F8-859E-9CEA06BFD92A/Library/Caches/NameIWantForMyLanguageModelFiles.dic \
-hmm /var/mobile/Containers/Bundle/Application/24E4619E-3B08-4814-A33E-D936DEC043DF/mywordbug.app/AcousticModelEnglish.bundle

Current configuration:
[NAME] [DEFLT] [VALUE]
-agc none none
-agcthresh 2.0 2.000000e+00
-allphone
-allphone_ci no no
-alpha 0.97 9.700000e-01
-argfile
-ascale 20.0 2.000000e+01
-aw 1 1
-backtrace no no
-beam 1e-48 1.000000e-48
-bestpath yes yes
-bestpathlw 9.5 9.500000e+00
-ceplen 13 13
-cmn current current
-cmninit 8.0 8.0
-compallsen no no
-debug 0
-dict /var/mobile/Containers/Data/Application/A64059C1-2A4E-43F8-859E-9CEA06BFD92A/Library/Caches/NameIWantForMyLanguageModelFiles.dic
-dictcase no no
-dither no no
-doublebw no no
-ds 1 1
-fdict
-feat 1s_c_d_dd 1s_c_d_dd
-featparams
-fillprob 1e-8 1.000000e-08
-frate 100 100
-fsg
-fsgusealtpron yes yes
-fsgusefiller yes yes
-fwdflat yes yes
-fwdflatbeam 1e-64 1.000000e-64
-fwdflatefwid 4 4
-fwdflatlw 8.5 8.500000e+00
-fwdflatsfwin 25 25
-fwdflatwbeam 7e-29 7.000000e-29
-fwdtree yes yes
-hmm /var/mobile/Containers/Bundle/Application/24E4619E-3B08-4814-A33E-D936DEC043DF/mywordbug.app/AcousticModelEnglish.bundle
-input_endian little little
-jsgf
-keyphrase
-kws
-kws_delay 10 10
-kws_plp 1e-1 1.000000e-01
-kws_threshold 1 1.000000e+00
-latsize 5000 5000
-lda
-ldadim 0 0
-lifter 0 0
-lm /var/mobile/Containers/Data/Application/A64059C1-2A4E-43F8-859E-9CEA06BFD92A/Library/Caches/NameIWantForMyLanguageModelFiles.DMP
-lmctl
-lmname
-logbase 1.0001 1.000100e+00
-logfn
-logspec no no
-lowerf 133.33334 1.333333e+02
-lpbeam 1e-40 1.000000e-40
-lponlybeam 7e-29 7.000000e-29
-lw 6.5 6.500000e+00
-maxhmmpf 30000 30000
-maxwpf -1 -1
-mdef
-mean
-mfclogdir
-min_endfr 0 0
-mixw
-mixwfloor 0.0000001 1.000000e-07
-mllr
-mmap yes yes
-ncep 13 13
-nfft 512 512
-nfilt 40 40
-nwpen 1.0 1.000000e+00
-pbeam 1e-48 1.000000e-48
-pip 1.0 1.000000e+00
-pl_beam 1e-10 1.000000e-10
-pl_pbeam 1e-10 1.000000e-10
-pl_pip 1.0 1.000000e+00
-pl_weight 3.0 3.000000e+00
-pl_window 5 5
-rawlogdir
-remove_dc no no
-remove_noise yes yes
-remove_silence yes yes
-round_filters yes yes
-samprate 16000 1.600000e+04
-seed -1 -1
-sendump
-senlogdir
-senmgau
-silprob 0.005 5.000000e-03
-smoothspec no no
-svspec
-tmat
-tmatfloor 0.0001 1.000000e-04
-topn 4 4
-topn_beam 0 0
-toprule
-transform legacy legacy
-unit_area yes yes
-upperf 6855.4976 6.855498e+03
-uw 1.0 1.000000e+00
-vad_postspeech 50 69
-vad_prespeech 20 10
-vad_startspeech 10 10
-vad_threshold 2.0 2.000000e+00
-var
-varfloor 0.0001 1.000000e-04
-varnorm no no
-verbose no no
-warp_params
-warp_type inverse_linear inverse_linear
-wbeam 7e-29 7.000000e-29
-wip 0.65 6.500000e-01
-wlen 0.025625 2.562500e-02

INFO: cmd_ln.c(703): Parsing command line:
\
-nfilt 25 \
-lowerf 130 \
-upperf 6800 \
-feat 1s_c_d_dd \
-svspec 0-12/13-25/26-38 \
-agc none \
-cmn current \
-varnorm no \
-transform dct \
-lifter 22 \
-cmninit 40

Current configuration:
[NAME] [DEFLT] [VALUE]
-agc none none
-agcthresh 2.0 2.000000e+00
-alpha 0.97 9.700000e-01
-ceplen 13 13
-cmn current current
-cmninit 8.0 40
-dither no no
-doublebw no no
-feat 1s_c_d_dd 1s_c_d_dd
-frate 100 100
-input_endian little little
-lda
-ldadim 0 0
-lifter 0 22
-logspec no no
-lowerf 133.33334 1.300000e+02
-ncep 13 13
-nfft 512 512
-nfilt 40 25
-remove_dc no no
-remove_noise yes yes
-remove_silence yes yes
-round_filters yes yes
-samprate 16000 1.600000e+04
-seed -1 -1
-smoothspec no no
-svspec 0-12/13-25/26-38
-transform legacy 2dct
0-unit_area1 yes yes
-upperf 6855.4976 6.800000e+03
-vad_postspeech 50 69
-vad_prespeech 20 10
-vad_startspeech 10 10
-vad_threshold 2.0 2.000000e+00
-varnorm no no
-verbose no no
-warp_params
-warp_type inverse_linear inverse_linear
-wlen 0.025625 2.562500e-02

INFO: acmod.c(252): Parsed model-specific feature parameters from /var/mobile/Containers/Bundle/Application/24E4619E-3B08-4814-A33E-D936DEC043DF/mywordbug.app/AcousticModelEnglish.bundle/feat.params
INFO: feat.c(715): Initializing feature stream to type: ‘1s_c_d_dd’, ceplen=13, CMN=’current’, VARNORM=’no’, AGC=’none’
INFO: cmn.c(143): mean[0]= 12.00, mean[1..12]= 0.0
INFO: acmod.c(171): Using subvector specification 0-12/13-25/26-38
INFO: mdef.c(518): Reading model definition: /var/mobile/Containers/Bundle/Application/24E4619E-3B08-4814-A33E-D936DEC043DF/mywordbug.app/AcousticModelEnglish.bundle/mdef
INFO: mdef.c(531): Found byte-order mark BMDF, assuming this is a binary mdef file
INFO: bin_mdef.c(336): Reading binary model definition: /var/mobile/Containers/Bundle/Application/24E4619E-3B08-4814-A33E-D936DEC043DF/mywordbug.app/AcousticModelEnglish.bundle/mdef
5-10-06 09:21:28.469 [Info] [Tracker.swift:72] track(_:info:) > Audio Source Optional([“Setting”: MicrophoneBuiltIn])
INFO: bin_mdef.c(516): 46 CI-phone, 168344 CD-phone, 3 emitstate/phone, 138 CI-sen, 6138 Sen, 32881 Sen-Seq
INFO: tmat.c(206): Reading HMM transition probability matrices: /var/mobile/Containers/Bundle/Application/24E4619E-3B08-4814-A33E-D936DEC043DF/mywordbug.app/AcousticModelEnglish.bundle/transition_matrices
2015-10-06 09:21:28.524 mywordbug[1235:531773] Audio route has changed for the following reason:
INFO: acmod.c(124): Attempting to use PTM computation module
INFO: ms_gauden.c(198): Reading mixture gaussian parameter: /var/mobile/Containers/Bundle/Application/24E4619E-3B08-4814-A33E-D936DEC043DF/mywordbug.app/AcousticModelEnglish.bundle/means
INFO: ms_gauden.c(292): 1 codebook, 3 feature, size:
INFO: ms_gauden.c(294): 512×13
INFO: ms_gauden.c(294): 512×13
INFO: ms_gauden.c(294): 512×13
INFO: ms_gauden.c(198): Reading mixture gaussian parameter: /var/mobile/Containers/Bundle/Application/24E4619E-3B08-4814-A33E-D936DEC043DF/mywordbug.app/AcousticModelEnglish.bundle/variances
INFO: ms_gauden.c(292): 1 codebook, 3 feature, size:
INFO: ms_gauden.c(294): 512×13
INFO: ms_gauden.c(294): 512×13
INFO: ms_gauden.c(294): 512×13
INFO: ms_gauden.c(354): 0 variance values floored
INFO: ptm_mgau.c(805): Number of codebooks doesn’t match number of ciphones, doesn’t look like PTM: 1 != 46
INFO: acmod.c(126): Attempting to use semi-continuous computation module
INFO: ms_gauden.c(198): Reading mixture gaussian parameter: /var/mobile/Containers/Bundle/Application/24E4619E-3B08-4814-A33E-D936DEC043DF/mywordbug.app/AcousticModelEnglish.bundle/means
INFO: ms_gauden.c(292): 1 codebook, 3 feature, size:
INFO: ms_gauden.c(294): 512×13
INFO: ms_gauden.c(294): 512×13
INFO: ms_gauden.c(294): 512×13
INFO: ms_gauden.c(198): Reading mixture gaussian parameter: /var/mobile/Containers/Bundle/Application/24E4619E-3B08-4814-A33E-D936DEC043DF/mywordbug.app/AcousticModelEnglish.bundle/variances
INFO: ms_gauden.c(292): 1 codebook, 3 feature, size:
INFO: ms_gauden.c(294): 512×13
INFO: ms_gauden.c(294): 512×13
INFO: ms_gauden.c(294): 512×13
2015-10-06 09:21:28.524 mywordbug[1235:531773] There was a category change. The new category is AVAudioSessionCategoryPlayAndRecord
INFO: ms_gauden.c(354): 0 variance values floored
INFO: s2_semi_mgau.c(904): Loading senones from dump file /var/mobile/Containers/Bundle/Application/24E4619E-3B08-4814-A33E-D936DEC043DF/mywordbug.app/AcousticModelEnglish.bundle/sendump
INFO: s2_semi_mgau.c(928): BEGIN FILE FORMAT DESCRIPTION
INFO: s2_semi_mgau.c(991): Rows: 512, Columns: 6138
INFO: s2_semi_mgau.c(1023): Using memory-mapped I/O for senones
INFO: s2_semi_mgau.c(1294): Maximum top-N: 4 Top-N beams: 0 0 0
INFO: phone_loop_search.c(114): State beam -225 Phone exit beam -225 Insertion penalty 0
INFO: dict.c(320): Allocating 4420 * 20 bytes (86 KiB) for word entries
INFO: dict.c(333): Reading main dictionary: /var/mobile/Containers/Data/Application/A64059C1-2A4E-43F8-859E-9CEA06BFD92A/Library/Caches/NameIWantForMyLanguageModelFiles.dic
INFO: dict.c(213): Allocated 1 KiB for strings, 1 KiB for phones
INFO: dict.c(336): 315 words read
INFO: dict.c(358): Reading filler dictionary: /var/mobile/Containers/Bundle/Application/24E4619E-3B08-4814-A33E-D936DEC043DF/mywordbug.app/AcousticModelEnglish.bundle/noisedict
INFO: dict.c(213): Allocated 0 KiB for strings, 0 KiB for phones
INFO: dict.c(361): 9 words read
INFO: dict2pid.c(396): Building PID tables for dictionary
INFO: dict2pid.c(406): Allocating 46^3 * 2 bytes (190 KiB) for word-initial triphones
2015-10-06 09:21:28.564 mywordbug[1235:531773] This is not a case in which OpenEars notifies of a route change. At the close of this function, the new audio route is —SpeakerMicrophoneBuiltIn—. The previous route before changing to this route was <AVAudioSessionRouteDescription: 0x14fc4490,
inputs = (
“<AVAudioSessionPortDescription: 0x14fbf960, type = MicrophoneBuiltIn; name = iPhone Microphone; UID = Built-In Microphone; selectedDataSource = Front>”
);
outputs = (
“<AVAudioSessionPortDescription: 0x162ab4b0, type = Speaker; name = Speaker; UID = Speaker; selectedDataSource = (null)>”
)>.
INFO: dict2pid.c(132): Allocated 25576 bytes (24 KiB) for word-final triphones
INFO: dict2pid.c(196): Allocated 25576 bytes (24 KiB) for single-phone word triphones
INFO: ngram_model_arpa.c(77): No \data\ mark in LM file
INFO: ngram_model_dmp.c(166): Will use memory-mapped I/O for LM file
INFO: ngram_model_dmp.c(220): ngrams 1=252, 2=500, 3=250
INFO: ngram_model_dmp.c(266): 252 = LM.unigrams(+trailer) read
INFO: ngram_model_dmp.c(312): 500 = LM.bigrams(+trailer) read
INFO: ngram_model_dmp.c(338): 250 = LM.trigrams read
INFO: ngram_model_dmp.c(363): 3 = LM.prob2 entries read
INFO: ngram_model_dmp.c(383): 3 = LM.bo_wt2 entries read
INFO: ngram_model_dmp.c(403): 2 = LM.prob3 entries read
INFO: ngram_model_dmp.c(431): 1 = LM.tseg_base entries read
INFO: ngram_model_dmp.c(487): 252 = ascii word strings read
INFO: ngram_search_fwdtree.c(99): 180 unique initial diphones
INFO: ngram_search_fwdtree.c(148): 0 root, 0 non-root channels, 16 single-phone words
INFO: ngram_search_fwdtree.c(186): Creating search tree
INFO: ngram_search_fwdtree.c(192): before: 0 root, 0 non-root channels, 16 single-phone words
INFO: ngram_search_fwdtree.c(326): after: max nonroot chan increased to 496
INFO: ngram_search_fwdtree.c(339): after: 180 root, 368 non-root channels, 15 single-phone words
INFO: ngram_search_fwdflat.c(157): fwdflat: min_ef_width = 4, max_sf_win = 25
2015-10-06 09:21:28.591 mywordbug[1235:531741] Restoring SmartCMN value of 29.748535
2015-10-06 09:21:28.591 mywordbug[1235:531741] Listening.
2015-10-06 09:21:28.593 mywordbug[1235:531741] Project has these words or phrases in its dictionary:
A
A(2)
ABOUT
ADD
AFTER
AGAIN
AGAIN(2)
AIR
ALL
ALONG
ALSO
ALWAYS
ALWAYS(2)
AMERICA
AMERICA(2)
AN
AN(2)
AND
AND(2)
ANIMAL
ANOTHER
ANSWER
ANY
ARE
ARE(2)
AROUND
AROUND(2)
AS
AS(2)
ASK
AT
…and 286 more.
2015-10-06 09:21:28.594 mywordbug[1235:531741] Recognition loop has started

2015-10-06 09:21:28.968 mywordbug[1235:531675] Speech detected…
INFO: ngram_search.c(463): Resized backpointer table to 10000 entries
2015-10-06 09:21:31.220 mywordbug[1235:531511] Stopping listening.
2015-10-06 09:21:31.221 mywordbug[1235:531511] Cleaning up.
2015-10-06 09:21:31.221 mywordbug[1235:531511] Cleanup complete.
2015-10-06 09:21:33.243 mywordbug[1235:531511] 09:21:33.243 ERROR: [0x37c7c000] AVAudioSession.mm:697: -[AVAudioSession setActive:withOptions:error:]: Deactivating an audio session that has running I/O. All I/O should be stopped or paused prior to deactivating the audio session.
2015-10-06 09:21:33.244 mywordbug[1235:531511] Error: couldn’t set session inactive.: ‘!act’
2015-10-06 09:21:33.244 mywordbug[1235:531511] Error: there was a problem tearing down the audio session: Error Domain=NSOSStatusErrorDomain Code=560030580 “(null)”.
2015-10-06 09:21:33.245 mywordbug[1235:531511] Unable to stop listening because because an utterance is still in progress; trying again.
2015-10-06 09:21:33.284 [Info] [Tracker.swift:72] track(_:info:) > Audio Source Optional([“Setting”: MicrophoneBuiltIn])
2015-10-06 09:21:33.285 mywordbug[1235:531773] Audio route has changed for the following reason:
2015-10-06 09:21:33.296 mywordbug[1235:531511] Attempting to stop an unstopped utterance so listening can stop.
INFO: cmn_prior.c(131): cmn_prior_update: from < 29.75 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 >
INFO: cmn_prior.c(149): cmn_prior_update: to < 29.19 -5.74 -5.17 2.53 -5.63 0.73 6.39 2.17 -0.99 4.58 -0.35 -0.88 4.77 >
INFO: ngram_search_fwdtree.c(1553): 5559 words recognized (23/fr)
INFO: ngram_search_fwdtree.c(1555): 378959 senones evaluated (1572/fr)
INFO: ngram_search_fwdtree.c(1559): 235521 channels searched (977/fr), 42660 1st, 124751 last
INFO: ngram_search_fwdtree.c(1562): 9300 words for which last channels evaluated (38/fr)
INFO: ngram_search_fwdtree.c(1564): 21775 candidate words for entering last phone (90/fr)
INFO: ngram_search_fwdtree.c(1567): fwdtree 0.64 CPU 0.264 xRT
INFO: ngram_search_fwdtree.c(1570): fwdtree 4.49 wall 1.862 xRT
INFO: ngram_search_fwdflat.c(302): Utterance vocabulary contains 123 words
2015-10-06 09:21:33.305 mywordbug[1235:531773] There was a category change. The new category is AVAudioSessionCategoryPlayAndRecord
2015-10-06 09:21:33.323 mywordbug[1235:531773] This is not a case in which OpenEars notifies of a route change. At the close of this function, the new audio route is —SpeakerMicrophoneBuiltIn—. The previous route before changing to this route was <AVAudioSessionRouteDescription: 0x14e07b80,
inputs = (
“<AVAudioSessionPortDescription: 0x14e22430, type = MicrophoneBuiltIn; name = iPhone Microphone; UID = Built-In Microphone; selectedDataSource = Bottom>”
);
outputs = (
“<AVAudioSessionPortDescription: 0x14fc7550, type = Speaker; name = Speaker; UID = Speaker; selectedDataSource = (null)>”
)>.
INFO: ngram_search_fwdflat.c(948): 4012 words recognized (17/fr)
INFO: ngram_search_fwdflat.c(950): 263429 senones evaluated (1093/fr)
INFO: ngram_search_fwdflat.c(952): 312163 channels searched (1295/fr)
INFO: ngram_search_fwdflat.c(954): 15646 words searched (64/fr)
INFO: ngram_search_fwdflat.c(957): 9235 word transitions (38/fr)
INFO: ngram_search_fwdflat.c(960): fwdflat 0.15 CPU 0.061 xRT
INFO: ngram_search_fwdflat.c(963): fwdflat 0.15 wall 0.062 xRT
INFO: ngram_search_fwdtree.c(432): TOTAL fwdtree 0.64 CPU 0.265 xRT
INFO: ngram_search_fwdtree.c(435): TOTAL fwdtree 4.49 wall 1.869 xRT
INFO: ngram_search_fwdflat.c(176): TOTAL fwdflat 0.15 CPU 0.061 xRT
INFO: ngram_search_fwdflat.c(179): TOTAL fwdflat 0.15 wall 0.063 xRT
INFO: ngram_search.c(307): TOTAL bestpath 0.00 CPU 0.000 xRT
INFO: ngram_search.c(310): TOTAL bestpath 0.00 wall 0.000 xRT
2015-10-06 09:21:33.461 mywordbug[1235:531511] No longer listening.
2015-10-06 09:21:33.518 [Info] [Tracker.swift:72] track(_:info:) > Stop Listening Optional([“Session Length”: 6, “Word Count”: 0])
2015-10-06 09:21:33.520 [Info] [Tracker.swift:89] peopleSet(_:value:) >

[collapse]

[Halle Winkler]

Hi,

Getting this right after successfully stopping the audio unit means some other aspect of the app is using audio i/o:

Deactivating an audio session that has running I/O. All I/O should be stopped or paused prior to deactivating the audio session.

[Author]

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