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Tag Archives: audio

Basic firmware for an audio player with effects

2016-05-05

For a personal project, I needed a device that could play distorted audio and take cues, as described by a …

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Audio player with effects

2016-04-26

For a personal project, I needed a device that could play distorted audio and take cues. I could have used …

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Even more PCM bit depth and a look at the filter response

2015-08-07

This post describes improvements in the dynamic range of PCM samples recovered from the PDM microphone in the SPLear™ sound …

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More dynamic range in the SPLear PDM conversion

2015-07-17

This post describes improvements in the dynamic range of PCM samples recovered from the PDM microphone in the SPLear™ sound …

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SPLear firmware improvements: scared threshold and packetized recording

2015-07-01

This post describes some tweaks to SPLear™ sound level measurement module firmware to make it more useful when connected to …

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Recording what scared us with a SPLear and a Raspberry Pi

2015-06-16

This post describes how to record audio from a SPLear™ sound level measurement module connected to a Raspberry Pi, when …

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Hearing the SPLear with GPIO on a Raspberry Pi

2015-06-05

This post describes how to use outputs other than the UART from a SPLear™ sound level measurement module connected to …

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Picturing the Noise with a SPLear and a Raspberry Pi

2015-05-22

This post describes how to plot SPL over time, using a SPLear™ sound level measurement module connected to a Raspberry …

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Quick plots of some noise with a SPLear and a Raspberry Pi

2015-05-21

This post shows a couple of plots of SPL over time, using a SPLear™ sound level measurement module connected to …

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Sending mail from the SPLear with a Raspberry Pi

2015-05-08

This post describes how to send an email when a SPLear™ sound level measurement module connected to a Raspberry Pi …

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