Picturing the Noise with a SPLear and a Raspberry Pi
This post describes how to plot SPL over time, using a SPLear™ sound level measurement module connected to a Raspberry …
Author Archives: rberteig
Quick plots of some noise with a SPLear and a Raspberry Pi
This post shows a couple of plots of SPL over time, using a SPLear™ sound level measurement module connected to …
Sending mail from the SPLear with a Raspberry Pi
This post describes how to send an email when a SPLear™ sound level measurement module connected to a Raspberry Pi …
Controlling the SPLear from the Raspberry Pi
This post demonstrates using a SPLear™ sound level measurement module with a Raspberry Pi from a simple Lua script. The …
Using the SPLear with the Raspberry Pi
Recently we announced the SPLear™, a module that integrates a PDM microphone along with a small ARM CPU to act …
SPLear Hobby Servo Drive
Last week we announced the SPLear™, a module that integrates a PDM microphone along with a small ARM CPU to …
Announcing the SPLear Board
Our series of posts about interpreting PDM audio with small microprocessors has been leading up to this point. We have …
Just the B of the Bang
While chasing details to link to in recent posts on PDM and sound I tripped over this blog from a …
SPL Measurement Experiments
This article will describe some experiments with measuring SPL from test signals played into our microphone through a headphone. This …
Performance of our PDM to PCM process in the LPC812
This article will discuss instrumenting the PDM to PCM conversion running in the LPC812, and report on the performance achieved. …
Words from Cheshire Engineering Corp. 