audio

func FramesToWAV ¶ added in v0.0.9

func FramesToWAV(frames []*model.AudioFrame) bytes.Buffer

FramesToWAV combines all AudioFrames into a single WAV buffer (16-bit PCM) with a valid RIFF header. The resulting buffer is ready to be sent to STT services (e.g., Azure, Google) as the request body with Content-Type: audio/wav.

Audio metadata (sample rate, channels) is taken from the first frame. If unavailable, it falls back to 16 kHz mono.

func Resample ¶

func Resample(input []byte, fromRate, toRate int) []byte

Simple linear resampler for 16-bit PCM mono audio