Determine Frequency using Audio Correlation. based on https://github.com/akellyirl/AutoCorr_Freq_detect. More...
#include <FrequencyDetection.h>
Public Member Functions | |
| FrequncyAutoCorrelationStream (Print &out) | |
| FrequncyAutoCorrelationStream (Stream &in) | |
| virtual void | addNotifyAudioChange (AudioInfoSupport &bi) |
| Adds target to be notified about audio changes. | |
| virtual AudioInfo | audioInfo () override |
| provides the actual input AudioInfo | |
| virtual AudioInfo | audioInfoOut () |
| provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream | |
| int | available () override |
| int | availableForWrite () override |
| virtual bool | begin () |
| bool | begin (AudioInfo info) |
| virtual void | clearNotifyAudioChange () |
| Deletes all change notify subscriptions. | |
| virtual void | end () |
| virtual void | flush () override |
| float | frequency (int channel) |
| provides the determined frequncy | |
| bool | isNotifyActive () |
| Checks if the automatic AudioInfo update is active. | |
| virtual | operator bool () |
| size_t | readBytes (uint8_t *data, size_t len) override |
| virtual size_t | readSilence (uint8_t *buffer, size_t length) |
| Source to generate silence: just sets the buffer to 0. | |
| virtual bool | removeNotifyAudioChange (AudioInfoSupport &bi) |
| Removes a target in order not to be notified about audio changes. | |
| virtual void | setAudioInfo (AudioInfo newInfo) override |
| Defines the input AudioInfo. | |
| void | setNotifyActive (bool flag) |
| Deactivate/Reactivate automatic AudioInfo updates: (default is active) | |
| virtual size_t | write (const uint8_t *data, size_t len) override |
| virtual size_t | write (uint8_t ch) override |
| virtual void | writeSilence (size_t len) |
| Writes len bytes of silence (=0). | |
Protected Member Functions | |
| template<class T > | |
| void | detect (T *samples, size_t len) |
| template<class T > | |
| float | detectChannel (int channel, T *samples, size_t len) |
| virtual int | not_supported (int out, const char *msg="") |
| void | notifyAudioChange (AudioInfo info) |
| void | refillReadBuffer () |
Protected Attributes | |
| int | _timeout = 10 |
| Vector< float > | freq |
| AudioInfo | info |
| bool | is_notify_active = true |
| Vector< AudioInfoSupport * > | notify_vector |
| Stream * | p_in = nullptr |
| Print * | p_out =nullptr |
| float | sum =0 |
| float | sum_old =0 |
| RingBuffer< uint8_t > | tmp_in {0} |
| RingBuffer< uint8_t > | tmp_out {0} |
Detailed Description
Determine Frequency using Audio Correlation. based on https://github.com/akellyirl/AutoCorr_Freq_detect.
- Copyright
- GPLv3
Member Function Documentation
◆ addNotifyAudioChange()
|
inlinevirtualinherited |
Adds target to be notified about audio changes.
Reimplemented in CodecNOP, MP3DecoderMAD, EncodedAudioOutput, EncodedAudioStream, AACDecoderFDK, DecoderBasic, MP3DecoderHelix, OggContainerDecoder, Pipeline, and Pipeline::ModifyingStreamAdapter.
◆ audioInfo()
provides the actual input AudioInfo
Implements AudioInfoSupport.
Reimplemented in JupyterAudioT< T >, MozziStream, TimerCallbackAudioStream, PureDataStream, AdapterAudioOutputToAudioStream, GeneratedSoundStream< T >, and GeneratedSoundStream< int16_t >.
◆ audioInfoOut()
provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream
Reimplemented in PureDataStream, PWMAudioOutput, ChannelFormatConverterStreamT< T >, ChannelFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, NumberFormatConverterStream, FormatConverterStream, Pipeline, and ResampleStream.
◆ available()
|
inlineoverridevirtual |
Reimplemented from BaseStream.
◆ availableForWrite()
|
inlineoverridevirtual |
Reimplemented from BaseStream.
◆ begin()
Reimplemented in AudioOutputWithCallback, SPDIFOutput, VS1053Stream, WM8960Stream, ESPNowStream, TimerCallbackAudioStream, QueueStream< T >, QueueStream< uint8_t >, DynamicMemoryStream, AnalogAudioArduino, AnalogAudioStream, MemoryStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, FormatConverterStream, and Pipeline.
◆ end()
Reimplemented in FaustStream< DSP >, I2SCodecStream, VS1053Stream, WM8960Stream, ESPNowStream, I2SStream, TimerCallbackAudioStream, QueueStream< T >, QueueStream< uint8_t >, AudioKitStream, AnalogAudioStream, HttpRequest, ICYStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, InputMixer< T >, InputMerge< T >, and Pipeline.
◆ flush()
Reimplemented from Print.
Reimplemented in ResampleStream, ICYStreamBuffered, BufferedTaskStream, and BufferedStream.
◆ operator bool()
Reimplemented in A2DPStream, Pipeline, I2SStream, and MemoryStream.
◆ readBytes()
Reimplemented from AudioStream.
◆ setAudioInfo()
Defines the input AudioInfo.
Implements AudioInfoSupport.
Reimplemented in VS1053Stream, WM8960Stream, I2SBitBang, ChannelFormatConverterStreamT< T >, ChannelFormatConverterStream, VolumeStream, MiniAudioStream, PortAudioStream, I2SCodecStream, MozziStream, SPDIFOutput, AudioLoRa, AnalogAudioStream, I2SStream, MeasuringStream, VolumeMeter, TimerCallbackAudioStream, AudioBLEStream, LoRaStream, AudioKitStream, VBANStream, AnalogAudioArduino, Equilizer3Bands, AdapterAudioOutputToAudioStream, TimedStream, ProgressStream, FormatConverterStream, FadeStream, Pipeline::ModifyingStreamAdapter, PureDataStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, NumberFormatConverterStreamT< TFrom, TTo >, NumberFormatConverterStream, Pipeline, and ResampleStream.
◆ write() [1/2]
Reimplemented from AudioStream.
◆ write() [2/2]
Reimplemented in BufferedTaskStream, and BufferedStream.
The documentation for this class was generated from the following file:
- src/AudioTools/Sandbox/FrequencyDetection.h
