Arduino shield for realtime audio processing

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The code for all of these projects is included in the Audio Hacker library as examples.



12-bit and 8-bit Audio Sampler

Record audio signals into the Audio Hacker memory. This project demonstrates both 12-bit and 8-bit sampling. You can also play back samples at different speeds.

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Realitme Adjustment of Sampling Rate and Bit Resolution

Dynamically adjust the audio sampling rate and bit resolution so that you can listen to the effect they have on audio quality

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Echo Effect

Manipulate the input signal to introduce an echo delay. Use a potentiometer to dynamically adjust the amount of delay.

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Four Sample 12-bit Sampler

Divide the Audio Hacker SRAM into 4 banks so that you can record and play back 4 different samples.

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3-Track Looper with Audio Mixing

Record up to 3 different tracks and loop them automatically. All the loops will be mixed together.

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Voice Changer

Use granular synthesis to change the pitch of a recorded sample. Alter the grain size and play the same grain multiple times to create bizarre effects!

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MIDI Triggering

Play your Audio Hacker like a MIDI instrument by using a MIDI shield and an external MIDI controller.

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Playing Samples in Reverse

This simple project shows how you can play recorded samples in reverse.

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Drum Machine

Record up to 3 different samples and create your own looped beats by tapping out a rhythm for each sample. All tracks will be mixed together and each track has volume control.

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Connecting an Electret Microphone

This project shows how to connect an electret microphone to your Audio Hacker. Use the preamp gain to amplify the input signal.

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Battery Backup for Recorded Samples

Connect a coin cell battery to preserve the contents of the Audio Hacker SRAM.

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Frequency Filtering

Filter an audio signal using a low-pass, high-pass, or band-pass resonant filter.

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