Journal Forum

Sound Board: High-Resolution Audio - October 2015

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

Access Journal Forum

AES E-Library

Why Professional 1-Bit Sigma-Delta Conversion is a Bad Idea

Document Thumbnail

Single-stage, 1-bit sigma-delta converters are, in principle, imperfectible. The authors prove this fact. The reason, simply stated, is that when properly dithered they are in constant overload. The consequence is that distortion, limit cycles, instability, and noise modulation can never be totally avoided. Recording, editing or storage systems based upon single-stage, 1-bit sigma-delta conversion and, in particular, professional systems using this type of conversion are thus a bad idea. In contrast multibit sigma-delta converters, which output linear PCM code (here, multibit refers to five or so bits in the converter), are in principle infinitely perfectible. They can be properly dithered to guarantee the absence of all distortion, limit cycles, and noise modulation. The audio industry is making a tragic mistake if it adopts 1-bit sigma-delta conversion as an archival format to replace multibit, linear PCM.:

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