Archive for the ‘Sound’ Category

PlainDSP (Part 4)

Part 1, 2, 3, 4 Here is the autonomous version of the sound meter which principle is described in PlainDSP (Part 3). The picture below shows the full schematics of the device   And here is the code of MicroSNDMTR_LCD, which includes the auto-ranging algorithm /* MicroSNDMTR_LCD: Micro sound meter connected to LCD 2×16 display Exemple of use of the […]

PlainDSP (Part 3)

Part 1, 2, 3, 4 —————————————————————————— Important notice: The huge popularity of PlainDSP (merge of PlainFFT and PlainADC libraries) and the numerous requests for help drove me to think about a convenient solution for all designers, artists, students, professors, R&D people, prototypists who need to understand, experiment, create systems which feature advanced Digital Signal Processing on Arduino. The result […]

Getting started with the DUE (Part 2)

Part [-1, 0] 1, 2 I got a mail with an interesting question (Thanks Andrew!) regarding the performances of the DUE versus the UNO using PlainFFT.   I built this simple sketch based on the example which comes with the PlainFFT package: #include “PlainFFT.h” #include “math.h” PlainFFT FFT; /* Create FFT object */ /* Simulation parameters */ #define TWO_PI 6.283185307179586476925286766559 const […]

Blog of the day

Open music labs is a real source of  high quality information and amazing products. The ADC page and its subsidiaries are of particular interest for those who try to challenge the performances of their ATMEGAs. A must visit. I am currently evaluating their Audio Codec Shield which “sounds” great!    

Sound capture (Part 5)

Part 1, 2, 3, 4, 5 After some new experiments on sound analysis, I used a different design for the microphone amplifying section, that I am happy to share with you (From the statistics of Arduinoos, I know that sound capture is a topic of major interest for many of you). Here is the schematics that I shall explain […]