arduino-libraries / audiofrequencymeter Goto Github PK

Allows the Arduino Zero and MKR1000 to sample a generic input audio signal and get the fundamental pitch

C++ 100.00%

audiofrequencymeter's Introduction

AudioFrequencyMeter Library for Arduino

Allows the Arduino Zero and MKR1000 to sample a generic input audio signal and get the fundamental pitch.

License

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

Methods

begin(uint32_t ulPin, uint32_t sampleRate) : initialize the ADC to sample ulPin at the chosen sample rate. This process works in interrupt using TC5 to start the sampling process. ADC resolution is set to 8 bit
end() : stops the sampling process disabling both the ADC and TC5 and resetting TC5
setClippingPin(int pin) : put pin in output to be used as a clipping indicator
checkClipping : checks if there is a clipping event (converted value equals to the top or the bottom of the ADC dynamic) and drives HIGH the clippingPin
setAmplitudeThreshold(uint8_t threshold) : sets the threshold for which a detected frequency is considered right or wrong. Default is 30
setTimerTolerance(int tolerance) : sets the tolerance for which a sampled signal is considered valid. Default is 10
setSlopeTolerance(int tolerance) : sets the tolerance for which the slope is valid for the trigger process. Default is 3
setBandwidth(float minFrequency, float maxFrequency) : set the range of frequencies for which the detected frequency is valid. Default values for now are 60 Hz - 1500 Hz. This must be improved
getFrequency : return the value of the detected frequency if it is above the threshold defined by setAmplitudeThreshold, else -1

audiofrequencymeter's People

Contributors

Stargazers

Watchers

audiofrequencymeter's Issues

AudioFrequencyMeter.h on ESP32 I2S

Hi
I am interested in using the AudioFrequencyMeter.h with a INMP441 MIC.
Anyone has done such a porting?
Thank you
E.

The library works in Arduino M0/M0 PRO?

Hello agdl!

Could you confirme me please if this code works in the Arduino M0 or Arduino M0 PRO?

AudioFrequencyMeter

The attached sketch is a copy of the example published in the Arduino documentation as an implementation of a 'Simple Audio Frequency Meter' at:
https://www.arduino.cc/en/Tutorial/SimpleAudioFrequencyMeter with the addition of an analogRead.
Adding code to read from any analog input pin causes the USB connection to the board to disconnect following a successful compilation (see attached screen-grab). The sketch can not be executed. The implementation of AudioFrequencyMeter appears be incompatible with the script referencing any other analog pin. If this is the case, then I consider this to be a serious bug. The test script can not be developed to include other measurements, e.g. input volume or setting tempo using ADC. Furthermore, the code should provide for a ‘soft landing’, not a USB disconnect, requiring a ‘double-click’ hardware reset. I have tested with an MKRZERO under OS X 10, OS X 12 and Windows.

AFMglitch2.txt

Arduino Uno Compatibility

Is there any way to make this compatible for the Arduino Uno? I'm pretty new to Arduino programming so maybe this is a dumb question, but if you could enlighten me anyway that would be great! Thank you

AudioFrequencyMeter.h on ESP32 I2S

Hi
I am interested in using the AudioFrequencyMeter.h with a INMP441 MIC.
Anyone has done such a porting?
Thank you
E.

schematic available?

Hello, I was looking at the library and I would like to know if there is any reference on how to connect the microphone or related schematic.

Greetings!

Begin Function stuck

Trying to run the frequency meter with begin(A0, 960000) with frequency meter version 1.0.2 and board support version 1.6.6. The sketch does not run past the begin function but will start running the rest if the integer is lowered down, say to 900000.

avr-g++: error: device-specs/specs-atmega328p: No such file or directory

Arduino: 1.8.8 (Windows 10), Board: "Arduino/Genuino Uno"

exit status 1
Error compiling for board Arduino/Genuino Uno.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

Add GitHub Actions workflow to synchronise with shared repository labels

Add GitHub Action based CI

Library Not Working

This library is not even compiling

Get Code not working in Arduino.cc reference link of AudioFrequencyMeter

The "get code" button on bottom right of code on leads to PAGE NOT FOUND-
https://www.arduino.cc/en/Tutorial/SimpleAudioFrequencyMeter

Is this a right place to open these issues? I know the commit capabilities to those pages is not available here but since this is the base directory for code-base of AudioFrequencyMeter library rising it here notifies respective authors. Correct me if this is a wrong place.
Also, if this needs a fix, I am willing to take up the charge and do the necessities.

Custom Arduino Zero not working with this library

Native Serial not working
Any idea ?

Arduino/Genuino Uno.

Arduino: 1.8.8 (Windows 10), Board: "Arduino/Genuino Uno"

WARNING: library Audio claims to run on (sam) architecture(s) and may be incompatible with your current board which runs on (avr) architecture(s).
In file included from C:\Users\engab\Documents\Arduino\sketch_jan24a\sketch_jan24a.ino:11:0:

C:\Program Files (x86)\Arduino\libraries\Bridge\src/YunClient.h:24:2: warning: #warning "The use of YunClient is deprecated. Use BridgeClient instead!" [-Wcpp]

#warning "The use of YunClient is deprecated. Use BridgeClient instead!"

In file included from C:\Users\engab\Documents\Arduino\sketch_jan24a\sketch_jan24a.ino:12:0:

C:\Program Files (x86)\Arduino\libraries\Bridge\src/YunServer.h:24:2: warning: #warning "The use of YunServer is deprecated. Use BridgeServer instead!" [-Wcpp]

#warning "The use of YunServer is deprecated. Use BridgeServer instead!"

In file included from C:\Users\engab\Documents\Arduino\libraries\Audio\src/Audio.h:16:0,

             from C:\Users\engab\Documents\Arduino\sketch_jan24a\sketch_jan24a.ino:14:

C:\Users\engab\Documents\Arduino\libraries\Audio\src/DAC.h:21:16: error: expected ')' before '*' token

DACClass(Dacc *_dac, uint32_t _dacId, IRQn_Type _isrId) :

C:\Users\engab\Documents\Arduino\libraries\Audio\src/DAC.h:35:2: error: 'Dacc' does not name a type

Dacc *dac;

C:\Users\engab\Documents\Arduino\libraries\Audio\src/DAC.h:37:2: error: 'IRQn_Type' does not name a type

IRQn_Type isrId;

C:\Users\engab\Documents\Arduino\libraries\Audio\src/DAC.h: In member function 'void DACClass::enableInterrupts()':

C:\Users\engab\Documents\Arduino\libraries\Audio\src/DAC.h:31:44: error: 'isrId' was not declared in this scope

void enableInterrupts() { NVIC_EnableIRQ(isrId); };

C:\Users\engab\Documents\Arduino\libraries\Audio\src/DAC.h:31:49: error: 'NVIC_EnableIRQ' was not declared in this scope

void enableInterrupts() { NVIC_EnableIRQ(isrId); };

C:\Users\engab\Documents\Arduino\libraries\Audio\src/DAC.h: In member function 'void DACClass::disableInterrupts()':

C:\Users\engab\Documents\Arduino\libraries\Audio\src/DAC.h:32:45: error: 'isrId' was not declared in this scope

void disableInterrupts() { NVIC_DisableIRQ(isrId); };

C:\Users\engab\Documents\Arduino\libraries\Audio\src/DAC.h:32:50: error: 'NVIC_DisableIRQ' was not declared in this scope

void disableInterrupts() { NVIC_DisableIRQ(isrId); };

exit status 1
Error compiling for board Arduino/Genuino Uno.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

Ambiguous output on Serial monitor

I am trying to run the example code on a Neutrino board ( SAMD21G18A, ARM M0+).
The input is a sine wave generated by AudaCity software at 440Hz.
The serial monitor only displays -1.00 Hz.
Any idea what's going on here?

AudioFrequencyMeter returns only integer values

getFrequency() method returns a floating point number, but the number is a result of integer division converted to floating point. Hence the return value is always integer albeit in floating point format.

Issue is on line 126 of the source module: frequency = (float)(sampleRate / period);

See discussion at https://forum.arduino.cc/index.php?topic=716159.msg4813625;topicseen#msg4813625

the example does not work Arduino ide 1.8.13

Arduino: 1.8.13 (Windows Store 1.8.42.0) (Windows 10), Board: "Arduino Uno"

The sketch name had to be modified.
Sketch names must start with a letter or number, followed by letters,
numbers, dashes, dots and underscores. Maximum length is 63 characters.

WARNING: library AudioFrequencyMeter claims to run on samd architecture(s) and may be incompatible with your current board which runs on avr architecture(s).

C:\Users\Dell\Documents\Arduino\libraries\AudioFrequencyMeter\src\AudioFrequencyMeter.cpp: In member function 'void AudioFrequencyMeter::ADCconfigure()':

C:\Users\Dell\Documents\Arduino\libraries\AudioFrequencyMeter\src\AudioFrequencyMeter.cpp:163:6: error: base operand of '->' is not a pointer

ADC->CTRLB.bit.RESSEL = ADC_CTRLB_RESSEL_8BIT_Val;

^~

C:\Users\Dell\Documents\Arduino\libraries\AudioFrequencyMeter\src\AudioFrequencyMeter.cpp:163:27: error: 'ADC_CTRLB_RESSEL_8BIT_Val' was not declared in this scope

ADC->CTRLB.bit.RESSEL = ADC_CTRLB_RESSEL_8BIT_Val;

                       ^~~~~~~~~~~~~~~~~~~~~~~~~

C:\Users\Dell\Documents\Arduino\libraries\AudioFrequencyMeter\src\AudioFrequencyMeter.cpp:167:6: error: base operand of '->' is not a pointer

ADC->CTRLB.bit.PRESCALER = ADC_CTRLB_PRESCALER_DIV8_Val; // Divide Clock by 8 -> ~100kHz

^~

C:\Users\Dell\Documents\Arduino\libraries\AudioFrequencyMeter\src\AudioFrequencyMeter.cpp:167:30: error: 'ADC_CTRLB_PRESCALER_DIV8_Val' was not declared in this scope

ADC->CTRLB.bit.PRESCALER = ADC_CTRLB_PRESCALER_DIV8_Val; // Divide Clock by 8 -> ~100kHz

                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~

C:\Users\Dell\Documents\Arduino\libraries\AudioFrequencyMeter\src\AudioFrequencyMeter.cpp:175:6: error: base operand of '->' is not a pointer

ADC->SAMPCTRL.reg = 0x1F; // Set max Sampling Time Length

^~

C:\Users\Dell\Documents\Arduino\libraries\AudioFrequencyMeter\src\AudioFrequencyMeter.cpp: In function 'bool ADCisSyncing()':

C:\Users\Dell\Documents\Arduino\libraries\AudioFrequencyMeter\src\AudioFrequencyMeter.cpp:184:14: error: base operand of '->' is not a pointer

return (ADC->STATUS.bit.SYNCBUSY);

^~

C:\Users\Dell\Documents\Arduino\libraries\AudioFrequencyMeter\src\AudioFrequencyMeter.cpp: In member function 'void AudioFrequencyMeter::ADCdisable()':

C:\Users\Dell\Documents\Arduino\libraries\AudioFrequencyMeter\src\AudioFrequencyMeter.cpp:189:6: error: base operand of '->' is not a pointer

ADC->CTRLA.bit.ENABLE = 0x00; // Disable ADC

^~

C:\Users\Dell\Documents\Arduino\libraries\AudioFrequencyMeter\src\AudioFrequencyMeter.cpp: In member function 'void AudioFrequencyMeter::ADCenable()':

C:\Users\Dell\Documents\Arduino\libraries\AudioFrequencyMeter\src\AudioFrequencyMeter.cpp:196:6: error: base operand of '->' is not a pointer

ADC->CTRLA.bit.ENABLE = 0x01; // Enable ADC

^~

C:\Users\Dell\Documents\Arduino\libraries\AudioFrequencyMeter\src\AudioFrequencyMeter.cpp: In member function 'void AudioFrequencyMeter::ADCsetMux()':

C:\Users\Dell\Documents\Arduino\libraries\AudioFrequencyMeter\src\AudioFrequencyMeter.cpp:208:28: error: 'g_APinDescription' was not declared in this scope

pinPeripheral(samplePin, g_APinDescription[samplePin].ulPinType);

                        ^~~~~~~~~~~~~~~~~

C:\Users\Dell\Documents\Arduino\libraries\AudioFrequencyMeter\src\AudioFrequencyMeter.cpp:208:3: error: 'pinPeripheral' was not declared in this scope

pinPeripheral(samplePin, g_APinDescription[samplePin].ulPinType);

^~~~~~~~~~~~~

C:\Users\Dell\Documents\Arduino\libraries\AudioFrequencyMeter\src\AudioFrequencyMeter.cpp:212:6: error: base operand of '->' is not a pointer

ADC->INPUTCTRL.bit.MUXPOS = g_APinDescription[samplePin].ulADCChannelNumber; // Selection for the positive ADC input

^~

C:\Users\Dell\Documents\Arduino\libraries\AudioFrequencyMeter\src\AudioFrequencyMeter.cpp: In member function 'void AudioFrequencyMeter::tcConfigure()':

C:\Users\Dell\Documents\Arduino\libraries\AudioFrequencyMeter\src\AudioFrequencyMeter.cpp:218:3: error: 'GCLK' was not declared in this scope