A method is presented which allows the direct mapping of any arbitrary audio PCM sample value into PWM pulse transition intervals, hence producing an analytic description of the resulting PWM data stream. In addition, the exact spectrum of the PWM signal can also be derived analytically from the PCM audio data. Comparative studies show that the proposed method has significant advantages over the existing methods used for the analysis of PWM conversion artifacts.
Click to purchase paper as a non-member 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 $33 for non-members and is free for AES members and E-Library subscribers.