Part - 1 The History of Audio Metering
(4:43)
From the beginning of electrical audio signals and the telephone industry's first meters through the broadcast and motion picture eras, the evolution of audio monitoring standards are presented in this interesting historical chronicle.
 
 
Dorrough produces a variety of digital audio meters, video meters, surround sound meters, and audio and video test products.
One year warranty is standard on all Dorrough products.
 
The company is located at 5221 Collier Place, Woodland Hills, California 91364 • Telephone (818) 998-2824. Fax: (818) 998-1507. Email: dorroughel@aol.com