ffmpeg -y -i input.mp4 -acodec pcm_s16le -f s16le -ac 1 -ar 16000 output.pcm you can also use it to convert mp3 to pcm. ffmpeg -y -i input.mp3 -acodec pcm_s16le -f s16le -ac 1 -ar 16000 output.pcm key params means:-f s16le … PCM signed 16-bit little-endian samples -ac 1 … 1 channel (mono) -ar 16000 … sample rate 16000Hz 3CX allows you to import audio files in this format to use as the system prompts: Format: WAV; Channel: Mono; Bit rate: 8 kHz; Sampling: 16 bit; You need to convert to this format any prompts for IVR, Queues and custom system prompt sets. To save your file, go to File > Export. The typical file type for a .wav is WAV (Microsoft) signed 16-bit PCM. If you find that you need to lower the bit depth you can do so during export by changing the file type to Other uncompressed files, setting the header to WAV (Microsoft), and the encoding to Unsigned 8-bit PCM. Share. Change the track from Stereo to Mono: Click on the Audio file to select. Go to the top of the Audacity window and select the Tracks menu. Mix > Mix Stereo Down to Mono. 4. Change the Sample Format: Select Format. Select > 16-bit PCM, as shown below > This can take a few minutes to update. 5. Free online tool to convert MP3/WAV to G.711 u-law or A-law, G.722, or G.729 for BroadWorks, Asterisk, FreeSWITCH, CUCM, UCCX, and more! Open Audacity. Click on File > Open and select the mp3 file in question. Click on Track > Stereo track to Mono. Click on File > Export. Choose "MP3 Files" as Format on the dropdown menu and click save. Note 1: If you want to save in higher quality bitrate click on options and select the desired bitrate. Note 2: As you click "Save" on the KvhJ8. Step 4: Convert File to 16-bit Audio. If your audio rate is higher than 16-bit, you will want to downconvert it. The sample in the pictures above shows it is 32-bit. Click on the track title and select Set Sample Format -> 16-bit. Your file bitrate should now show 16-bit PCM in the properties to the left. P.s don't forget it's PCM, 8kHz 16-bit, mono, maximum length 90 seconds . ACSS (SME) APSS (SME) www.ipoffice.tel We are using MP3's at 24 bit 44.1KHz. We have Changing the bit depth is very simple: If you must use Python, then you could use PySoundFile as you found. Here's a little code snippet: import soundfile data, samplerate = soundfile.read ('old.wav') soundfile.write ('new.wav', data, samplerate, subtype='PCM_16') You should also use soundfile.available_subtypes to see which subtypes you can The input audio is from Discord, which is supposed to be 48Khz 16 bit stereo interleaved BE signed pcm audio. Ill give the Mono one a go, see what happens then, and otherwhise it is probably fine to just remove an element from the end of the array, since 1 element does not make a lot of difference for speech. Not the cleanest solution but. Carregue o áudio que você deseja transformar em WAV. Altere a resolução de bits, taxa de amostragem, formato PCM e mais nas configurações opcionais (opcional). Clicando no botão respectivo, a conversão começa. Converta seu áudio para o formato WAV com este conversor de WAV online gratuito. Você também pode extrair faixas de áudio

convert mp3 to pcm 8khz 16 bit mono