4 Hz modulation energy

To: AUDITORY@xxxxxxxxxxxxxxx
Subject: 4 Hz modulation energy
From: Arthur Choi <arthurkin_choi@xxxxxxxxxxx>
Date: Thu, 24 Mar 2005 15:30:39 +1100
Comments: RFC822 error: <W> MESSAGE-ID field duplicated. Last occurrence was retained.
Delivery-date: Thu Mar 24 00:05:20 2005
Reply-to: Arthur Choi <arthurkin_choi@xxxxxxxxxxx>
Sender: AUDITORY Research in Auditory Perception <AUDITORY@xxxxxxxxxxxxxxx>

Dear all,

Could anybody tell me the method and the calculations on obtaining "4 Hz modulation energy" for a speech signal?

regards

Arthur

Follow-Ups:
- Auditory demonstrations
  - From: Yoshitaka Nakajima
- Re: 4 Hz modulation energy
  - From: Erick Gallun