3 Band Equilizer inspired from https://www.musicdsp.org/en/latest/Filters/236-3-band-equaliser.html More...
#include <Equilizer.h>
Inheritance diagram for Equilizer3Bands:
Classes | |
| struct | EQSTATE |
Public Member Functions | |
| Equilizer3Bands (AudioOutput &out) | |
| Equilizer3Bands (AudioStream &stream) | |
| Equilizer3Bands (Print &out) | |
| Equilizer3Bands (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 (ConfigEquilizer3Bands &config) |
| virtual void | clearNotifyAudioChange () |
| Deletes all change notify subscriptions. | |
| ConfigEquilizer3Bands & | config () |
| ConfigEquilizer3Bands & | defaultConfig () |
| virtual void | end () |
| virtual void | flush () override |
| bool | isNotifyActive () |
| Checks if the automatic AudioInfo update is active. | |
| operator bool () | |
| size_t | readBytes (uint8_t *data, size_t len) override |
| Provides the data from all streams mixed together. | |
| 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 info) override |
| Defines the input AudioInfo. | |
| void | setNotifyActive (bool flag) |
| Deactivate/Reactivate automatic AudioInfo updates: (default is active) | |
| void | setOutput (Print &out) override |
| Defines/Changes the output target. | |
| void | setStream (Stream &io) override |
| Defines/Changes the input & output. | |
| 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 | |
| void | filterSamples (const uint8_t *data, size_t len) |
| virtual int | not_supported (int out, const char *msg="") |
| void | notifyAudioChange (AudioInfo info) |
| void | refillReadBuffer () |
| float | sample (EQSTATE &es, float sample) |
| float | toFloat (int16_t v) |
| int16_t | toInt16 (float v) |
Protected Attributes | |
| int | _timeout = 10 |
| ConfigEquilizer3Bands | cfg |
| AudioInfo | info |
| bool | is_notify_active = true |
| int | max_state_count = 0 |
| Vector< AudioInfoSupport * > | notify_vector |
| ConfigEquilizer3Bands * | p_cfg = &cfg |
| Print * | p_print = nullptr |
| Stream * | p_stream = nullptr |
| struct audio_tools::Equilizer3Bands::EQSTATE * | state = nullptr |
| RingBuffer< uint8_t > | tmp_in {0} |
| RingBuffer< uint8_t > | tmp_out {0} |
| const float | vsa = (1.0 / 4294967295.0) |
Detailed Description
3 Band Equilizer inspired from https://www.musicdsp.org/en/latest/Filters/236-3-band-equaliser.html
Member Function Documentation
◆ toFloat()
|
inlineprotected |
convert float in the range -1 to 1 to a int16 and clip the values that are out of range
◆ toInt16()
|
inlineprotected |
convert float in the range -1 to 1 to a int16 and clip the values that are out of range
The documentation for this class was generated from the following file:
- src/AudioFilter/Equilizer.h
