Best technique #696

aqildad-create · 2023-03-20T18:47:20Z

aqildad-create
Mar 20, 2023

Sr i am working on sending microphone stream data from one esp to another via ESPNOW . .

initially i was working on wave encoding format but found its size is VERY huge , then realize to work on Mp3 encoding , but still i am confuse which scheme is best .

Is their any other better option ?

Answered by pschatzmann

Mar 20, 2023

Just use one of the low complexity codecs. I think the ones also used by bluetooth might be interresting:
https://github.com/pschatzmann/arduino-audio-tools/wiki/Encoding-and-Decoding-of-Audio
The only ones I would avoid are mp3 and aac because they use too much resources...

If you need more info about each codec: google is your friend!

View full answer

pschatzmann · 2023-03-20T18:50:23Z

pschatzmann
Mar 20, 2023
Maintainer

Just use one of the low complexity codecs. I think the ones also used by bluetooth might be interresting:
https://github.com/pschatzmann/arduino-audio-tools/wiki/Encoding-and-Decoding-of-Audio
The only ones I would avoid are mp3 and aac because they use too much resources...

If you need more info about each codec: google is your friend!

0 replies

aqildad-create · 2023-03-21T05:01:00Z

aqildad-create
Mar 21, 2023
Author

Thanks for the detail response , and apology if mis any documentation .

I Recorded audio in SBC encoded format ,but Now I want to play/listen the file in computer , mostly i uses audacity to play wav or Mp3 file , but cant open SBC , i search other way to play SBC file in computer but have no success .

0 replies

pschatzmann · 2023-03-21T05:04:05Z

pschatzmann
Mar 21, 2023
Maintainer

You can compile and run a sketch written with the arduino-audio-tools on the desktop...

0 replies

aqildad-create · 2023-03-24T10:08:15Z

aqildad-create
Mar 24, 2023
Author

I record file i2s microphone with SBCencoder , Attached is the recorded file .. But when I play with SBC decoder , I am getting noise only .

How to counter check the file recorded is ok ?

Pre test : I successfully record wave file and play wav file .

Below is log of SBC decoder playing .

[I] I2SConfig.h : 104 - rx/tx mode: TX_MODE
[I] I2SConfig.h : 105 - port_no: 0
[I] I2SConfig.h : 106 - is_master: Master
[I] I2SConfig.h : 107 - sample rate: 44100
[I] I2SConfig.h : 108 - bits per sample: 16
[I] I2SConfig.h : 109 - number of channels: 2
[I] I2SConfig.h : 110 - i2s_format: I2S_STD_FORMAT
[I] I2SConfig.h : 112 - auto_clear:1
[I] I2SConfig.h : 119 - buffer_count:10
[I] I2SConfig.h : 120 - buffer_size:512
[I] I2SConfig.h : 124 - pin_bck: 27
[I] I2SConfig.h : 126 - pin_ws: 26
[I] I2SConfig.h : 128 - pin_data: 25
[I] AudioEncoded.h : 249 - virtual void audio_tools::EncodedAudioPrint::setNotifyAudioChange(audio_tools::AudioBaseInfoDependent&)
[I] CodecSBC.h : 46 - virtual void audio_tools::SBCDecoder::begin()
[I] AudioCopy.h : 71 - buffer_size=1024
[I] CodecSBC.h : 112 - channels: 1
[I] CodecSBC.h : 131 - sample_rate: 44100
[I] I2SStream.h : 69 - virtual void audio_tools::I2SStream::setAudioInfo(audio_tools::AudioBaseInfo)
[I] AudioTypes.h : 63 - sample_rate: 44100
[I] AudioTypes.h : 64 - channels: 1
[I] AudioTypes.h : 65 - bits_per_sample: 16
[I] I2SConfig.h : 104 - rx/tx mode: TX_MODE
[I] I2SConfig.h : 105 - port_no: 0
[I] I2SConfig.h : 106 - is_master: Master
[I] I2SConfig.h : 107 - sample rate: 44100
[I] I2SConfig.h : 108 - bits per sample: 16
[I] I2SConfig.h : 109 - number of channels: 1
[I] I2SConfig.h : 110 - i2s_format: I2S_STD_FORMAT
[I] I2SConfig.h : 112 - auto_clear:1
[I] I2SConfig.h : 119 - buffer_count:10
[I] I2SConfig.h : 120 - buffer_size:512
[I] I2SConfig.h : 124 - pin_bck: 27
[I] I2SConfig.h : 126 - pin_ws: 26
[I] I2SConfig.h : 128 - pin_data: 25
[I] I2SConfig.h : 104 - rx/tx mode: TX_MODE
[I] I2SConfig.h : 105 - port_no: 0
[I] I2SConfig.h : 106 - is_master: Master
[I] I2SConfig.h : 107 - sample rate: 44100
[I] I2SConfig.h : 108 - bits per sample: 16
[I] I2SConfig.h : 109 - number of channels: 1
[I] I2SConfig.h : 110 - i2s_format: I2S_STD_FORMAT
[I] I2SConfig.h : 112 - auto_clear:1
[I] I2SConfig.h : 119 - buffer_count:10
[I] I2SConfig.h : 120 - buffer_size:512
[I] I2SConfig.h : 124 - pin_bck: 27
[I] I2SConfig.h : 126 - pin_ws: 26
[I] I2SConfig.h : 128 - pin_data: 25
[I] CodecSBC.h : 158 - input_buffer: 72
[I] CodecSBC.h : 77 - framelen: 72
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
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[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
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[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
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[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
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[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 ->
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[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
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[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
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[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
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[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
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[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 1024 -> 1024 -> 1024 bytes - in 1 hops
[I] AudioCopy.h : 136 - StreamCopy::copy 320 -> 320 -> 320 bytes - in 1 hops

.
.AudioFile01.txt

0 replies

pschatzmann · 2023-03-24T11:04:46Z

pschatzmann
Mar 24, 2023
Maintainer

You can find a test case in the tests...

0 replies

aqildad-create · 2023-03-24T11:30:57Z

aqildad-create
Mar 24, 2023
Author

i test-codec-sbc , and i can hear the sine tune from speaker ,

Also below are success test :

1:Mp3 play from SPIFFS work ,
2:Audio Record and play success .wave format . . if this test work then I only change wave to SBC.

Then were the problem is , My recorded sampling rate is 44100 , bits per sample: 16 . What else should check ?

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Best technique #696

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