Struct dp_spectrogram_state_t¶

ClassList > dp_spectrogram_state_t

Spectrogram state. Allocate with dp_spectrogram_create() .More...

#include <spectrogram_core.h>

Public Attributes¶

Type	Name
float	beta
size_t	consumed
dp_f32_framer_t	fr
size_t	hop
dp_psd_kernel_t	k
float _Complex *	last
int	mode
size_t	nfft
dp_f32_t *	ring
int	window

Detailed Description¶

Every field is configuration (or k's scratch) except fr's stream position and consumed. The state blob carries the configuration a row depends on (mode, nfft, hop, window, beta) and the stream position, not consumed.

Public Attributes Documentation¶

variable beta¶

float dp_spectrogram_state_t::beta;

Kaiser beta (the Kaiser window only).

variable consumed¶

size_t dp_spectrogram_state_t::consumed;

Input samples the last push took.

variable fr¶

dp_f32_framer_t dp_spectrogram_state_t::fr;

Any chunk in, nfft-sample frames out.

variable hop¶

size_t dp_spectrogram_state_t::hop;

Samples between row starts.

variable k¶

dp_psd_kernel_t dp_spectrogram_state_t::k;

PSD's per-frame kernel: n = nfft, no pad.

variable last¶

float _Complex* dp_spectrogram_state_t::last;

flush()'s zero-padded frame, nfft samples.

variable mode¶

int dp_spectrogram_state_t::mode;

DP_SPECTROGRAM_POWER or DP_SPECTROGRAM_DB.

variable nfft¶

size_t dp_spectrogram_state_t::nfft;

Samples per frame, and bins per row.

variable ring¶

dp_f32_t* dp_spectrogram_state_t::ring;

The carry's storage, owned by fr alone.

variable window¶

int dp_spectrogram_state_t::window;

A DP_PSD_WINDOW_* (the kernel's window).

The documentation for this class was generated from the following file native/inc/doppler/spectrogram/spectrogram_core.h