Journal Forum

Synchronized Swept-Sine: Theory, Application, and Implementation - October 2015

Effect of Microphone Number and Positioning on the Average of Frequency Responses in Cinema Calibration - October 2015
1 comment

The Measurement and Calibration of Sound Reproducing Systems - July 2015

Access Journal Forum

AES E-Library

Application of Walsh Functions to an FM Stereo Demodulator

Document Thumbnail

In the conventional FM stereo demodulator, interference from adjacent channels is demodulated by the harmonics of a square wave switching signal resulting in a high pitched whistle type noise. In our new demodulator, such noise is not generated because the switching square waves are derived from Walsh functions. We can therefore eliminate the low-pass filter, producing a phase-linear composite signal characteristic with high separation and low distortion.

AES Convention: Paper Number:
Publication Date:

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!

Facebook   Twitter   LinkedIn   Google+   YouTube   RSS News Feeds  
AES - Audio Engineering Society