arduino-audio-tools
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Configuration for Goertzel algorithm detectors. More...
#include <GoerzelStream.h>
Public Member Functions | |
GoertzelConfig (const AudioInfo &info) | |
Copy constructor from AudioInfo. | |
virtual void | clear () |
void | copyFrom (AudioInfo info) |
Same as set. | |
bool | equals (AudioInfo alt) |
Returns true if alt values are the same like the current values. | |
bool | equalsExSampleRate (AudioInfo alt) |
Checks if only the sample rate is different. | |
virtual void | logInfo (const char *source="") |
operator bool () | |
Returns true if all components are defined (no component is 0) | |
bool | operator!= (AudioInfo alt) |
Returns true if alt values are the different from the current values. | |
bool | operator== (AudioInfo alt) |
Returns true if alt values are the same like the current values. | |
void | set (AudioInfo info) |
Copies the values from info. | |
void | setAudioInfo (AudioInfo info) |
Same as set. | |
Public Attributes | |
uint8_t | bits_per_sample = DEFAULT_BITS_PER_SAMPLE |
Number of bits per sample (int16_t = 16 bits) | |
int | block_size = 205 |
uint8_t | channel = 0 |
channel used for detection when used in a stream | |
uint16_t | channels = DEFAULT_CHANNELS |
Number of channels: 2=stereo, 1=mono. | |
sample_rate_t | sample_rate = DEFAULT_SAMPLE_RATE |
Sample Rate: e.g 44100. | |
float | target_frequency = 0.0f |
Target frequency to detect in Hz (same for all channels) | |
float | threshold = 0.5f |
float | volume = 1.0f |
Volume factor for normalization - scales input samples before processing. | |
Configuration for Goertzel algorithm detectors.
This structure extends AudioInfo to include Goertzel-specific parameters. It defines the frequency detection behavior, audio format, and processing parameters for the Goertzel algorithm implementation.
int block_size = 205 |
Number of samples to process per block (N) - affects detection latency and accuracy
float threshold = 0.5f |
Detection threshold for magnitude (normalized samples, typically 0.1 to 1.0)