SPLear Hobby Servo Drive

2015-04-28

Last week we announced the SPLear™, a module that integrates a PDM microphone along with a small ARM CPU to …

Announcing the SPLear Board

2015-04-20

Our series of posts about interpreting PDM audio with small microprocessors has been leading up to this point. We have …

2015-04-07

This article will describe some experiments with measuring SPL from test signals played into our microphone through a headphone. This …

2015-03-20

This post is discusses some interesting properties of sound itself, not all of which can be easily measured. This is …

2015-03-05

I updated the fossil PDMStunts repository to include source code for computing SPL from PDM microphone data as described in …

2015-03-03

Since porting the PDM microphone SPL measurement code base from the ATTiny85 to the ARM based LPC8xx family, it would …

2015-02-02

In this post, we discuss why we represent SPL on a logarithmic scale, why you should care, and how we …