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README.md

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@@ -24,15 +24,15 @@ As “Audio Sources” we will have e.g.:
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- Generated Sound – [GeneratedSoundStream](https://pschatzmann.github.io/arduino-audio-tools/html/classaudio__tools_1_1_generated_sound_stream.html)
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- Mobile Phone A2DP Bluetooth – [A2DPStream](https://pschatzmann.github.io/arduino-audio-tools/html/classaudio__tools_1_1_a2_d_p_stream.html)
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- Binary Data in Flash Memory – [MemoryStream](https://pschatzmann.github.io/arduino-audio-tools/html/classaudio__tools_1_1_memory_stream.html)
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- SD Files
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- Any other Arduino Classes implementing Streams: SD, Ethernet etc
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As “Audio Sinks” we will have e.g:
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- external DAC – [I2SStream](https://pschatzmann.github.io/arduino-audio-tools/html/classaudio__tools_1_1_i2_s_stream.html)
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- an Amplifier – [AnalogAudioStream](https://pschatzmann.github.io/arduino-audio-tools/html/classaudio__tools_1_1_analog_audio_stream.html)
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- Bluetooth Speakers – [A2DPStream](https://pschatzmann.github.io/arduino-audio-tools/html/classaudio__tools_1_1_a2_d_p_stream.html)
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- Serial to display the data as CSV – [CsvStream](https://pschatzmann.github.io/arduino-audio-tools/html/classaudio__tools_1_1_csv_stream.html)
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- SD Files
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- Any other Arduino Classes implementing Streams: SD, Ethernet etc
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Here is an simple example which streams a file from the Flash Memory and writes it to I2S:
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And some more useful examples:
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- [streams-memory_raw-i2s](examples/streams-memory_raw-i2s_external_dac) - Play music form Flash Memory via I2S to External DAC
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- [streams-memory_raw-i2s](examples/streams-memory_raw-i2s) - Play music form Flash Memory via I2S to External DAC
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- [streams-url_raw-serial](/examples/streams-url_raw-serial) Displaying a music file from the internet on the Serial Plotter
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- [streams-url_raw-I2S_external_dac.ino](/examples/streams-url_raw-I2S_external_dac.ino) Streaming a File from the Internet to on external DAC via I2S
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- [streams-url_raw-I2S.ino](/examples/streams-url_raw-i2s) Streaming a File from the Internet to on external DAC via I2S
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- [streams-mozzi-a2dp](/examples/streams-mozzi-a2dp) Use Mozzi to generate Sound to be sent to a Bluetooth Speaker
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... these are just a few examples, but you can combine any Input Stream with any Output Stream as you like...
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#### Basic API
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- [base-adc-serial](examples/base-adc-serial) - Sample analog sound and write it to Serial
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- [base-adc-a2dp](examples/base-adc-a2dp) - Sample analog sound and write it to a A2DP Bluetooth source
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- [base-file_raw-serial](examples/base-file_raw-serial) - Read Raw File from SD card to and write it to Serial
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- [base-file_raw-a2dp](examples/base-file_raw-a2dp) - Read Raw File from SD card write it A2DP Bluetooth
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- [base-file_mp3-a2dp](examples/base-file_mp3-a2dp) - Stream MP3 File from SD card to A2DP Bluetooth using the ESP8266Audio library
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- [base-i2s-serial](examples/base-i2s-serial) - Sample digital sound and write it to Serial
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- [base-i2s-a2dp](examples/base-i2s-a2dp) - Sample analog sound and write it to a A2DP Bluetooth source
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- [base-adc-serial](basic-api/base-adc-serial) - Sample analog sound and write it to Serial
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- [base-adc-a2dp](basic-api/base-adc-a2dp) - Sample analog sound and write it to a A2DP Bluetooth source
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- [base-file_raw-serial](basic-api/base-file_raw-serial) - Read Raw File from SD card to and write it to Serial
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- [base-file_raw-a2dp](basic-api/base-file_raw-a2dp) - Read Raw File from SD card write it A2DP Bluetooth
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- [base-file_mp3-a2dp](basic-api/base-file_mp3-a2dp) - Stream MP3 File from SD card to A2DP Bluetooth using the ESP8266Audio library
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- [base-i2s-serial](basic-api/base-i2s-serial) - Sample digital sound and write it to Serial
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- [base-i2s-a2dp](basic-api/base-i2s-a2dp) - Sample analog sound and write it to a A2DP Bluetooth source
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Dependent on the example you might need to install some of the following libraries:
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- [ESP32-A2DP Library](https://github.com/pschatzmann/ESP32-A2DP) to support A2DP Bluetooth Audio
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- [ESP8266Audio]( ) to play different audio Formats
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- [ESP8266Audio](https://github.com/earlephilhower/ESP8266Audio) to play different audio Formats
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- [SD Library](https://www.arduino.cc/en/reference/SD) to read and write files.
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- [arduino-fdk-aac](https://github.com/pschatzmann/arduino-fdk-aac) to encode or decode AAC
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- [Mozzi](https://github.com/pschatzmann/Mozzi) A sound synthesis library for Arduino
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# Digital output via I2S to a external DAC
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# Test Signal to Bluetooth Speaker
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Sometimes it is quite useful to be able to generate a test tone.
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We can use the GeneratedSoundStream class together with a SoundGenerator class. In my example I use a SineWaveGenerator.
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To test the I2S output I'm using this generated signal and write it to A2DP (e.g. a Bluetooth Speaker).
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To test the output I'm using this generated signal and write it to A2DP (e.g. a Bluetooth Speaker).
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