Audio DSP

Audio DSP functions. More...

Functions
void	drv_audio_dsp_equalizer (q15_t *p_samples_q15, unsigned int buffer_size)
	Audio equalization by IIR filtering. More...
void	drv_audio_dsp_gain_control (q15_t *p_samples_q15, unsigned int buffer_size)
	Audio gain correction by multiplying samples with a constant value. More...

Detailed Description

Audio DSP functions.

Function Documentation

void drv_audio_dsp_equalizer	(	q15_t *	p_samples_q15,
		unsigned int	buffer_size
	)

Audio equalization by IIR filtering.

Sample buffer is overwritten with the processed samples.

Parameters

[in,out]	p_samples_q15	Pointer to audio_buffer samples in (1.15) format.
[in]	buffer_size	Number of (1.15) samples in a buffer.

void drv_audio_dsp_gain_control	(	q15_t *	p_samples_q15,
		unsigned int	buffer_size
	)

Audio gain correction by multiplying samples with a constant value.

Sample buffer is overwritten with the processed samples. Constant gain value is defined by AUDIO_GAIN_CONTROL_Q3_13 in (3.13) format - (-4.000...+3.999).

Parameters

[in,out]	p_samples_q15	Pointer to audio_buffer samples in (1.15) format.
[in]	buffer_size	Number of (1.15) samples in a buffer.