player_audiodsp_cmd Struct Reference
#include <player.h>
Detailed Description
Command: tone / chirp to play.
The audiodsp interface accepts commands to produce fixed-frequency tones or binary phase shift keyed(BPSK) chirps through /dev/dsp (which is assumed to be associated with a sound card to which a speaker is attached). The command subtype, which should be PLAYER_AUDIODSP_PLAY_TONE, PLAYER_AUDIODSP_PLAY_CHIRP, or PLAYER_AUDIODSP_REPLAY, determines what to do.
Public Attributes | |
| float | frequency |
| Frequency to play [Hz]. | |
| float | amplitude |
| Amplitude to play [dB]. | |
| float | duration |
| Duration to play [s]. | |
| uint32_t | bit_string_count |
| Length of bit string. | |
| uint8_t | bit_string [PLAYER_AUDIODSP_MAX_BITSTRING_LEN] |
| BitString to encode in sine wave. | |
The documentation for this struct was generated from the following file: