S.O.N.G/opus-go

Sean DuBois 733188ab17 Implement bitdepth conversion and upsampling

bitdepth package takes F32LE -> S16LE and handles upsampling
from 16Khz -> 48Khz

2022-09-30 21:56:49 -06:00

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decoder

decoder demonstrates decoding a ogg file and saving the results to a single file

Instructions

Install decoder

Download and install the decoder

go install github.com/pion/opus/examples/decoder@latest

Create a ogg file to decode

Encode Opus into an ogg file, or use one that you already have. This implementation doesn't support most Opus features yet, so encoding will be constrained.

ffmpeg -i $INPUT_FILE -c:a libopus -ac 1 -b:a 10K output.ogg

Decode

Demux and decode the provided ogg file. The output audio samples will be saved to disk.

decoder `pwd`/output.ogg `audio-samples.pcm`

Play your audio

Now play the audio with the tool of your choice.

gst-launch-1.0 filesrc location=audio-samples.pcm ! audio/x-raw, format=S16LE, rate=48000,channels=1  ! autoaudiosink -v

ffplay -f s16le -ar 48000 audio-samples.pcm

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