Echo Digital Audio designs and manufactures various digital audio recording interfaces, audio test equipment, custom professional audio products, and audio software. The company is located in Santa Barbara, CA

Echo Digital Audio ( formerly Street Electronics) introduced their first audio interface Echo II for the Apple II

Apple II

The Apple II is an 8-bit home computer, one of the first highly successful mass-produced microcomputer products, designed primarily by Steve Wozniak, manufactured by Apple Computer and introduced in 1977...

 in 1978 to provide speech output for the blind, educational, and handicapped markets.

In the 1990s Echo went on to design and manufacture one of the first multi-track audio recording product for the PC and Mac markets. Echo has licensed its DSP-based audio technology to several leading audio and semiconductor

Semiconductor

A semiconductor is a material with electrical conductivity due to electron flow intermediate in magnitude between that of a conductor and an insulator. This means a conductivity roughly in the range of 103 to 10−8 siemens per centimeter...

 companies including: Gibson Guitar, Analog Devices

Analog Devices

Analog Devices, Inc. , known as ADI, is an American multinational semiconductor company specializing in data conversion and signal conditioning technology, headquartered in Norwood, Massachusetts...

, HP, Sony

Sony

, commonly referred to as Sony, is a Japanese multinational conglomerate corporation headquartered in Minato, Tokyo, Japan and the world's fifth largest media conglomerate measured by revenues....

, Motorola

Motorola

Motorola, Inc. was an American multinational telecommunications company based in Schaumburg, Illinois, which was eventually divided into two independent public companies, Motorola Mobility and Motorola Solutions on January 4, 2011, after losing $4.3 billion from 2007 to 2009...

, Peavey

Peavey Electronics

Peavey Electronics Corporation is one of the largest audio equipment manufacturers in the world, headquartered in Meridian, Mississippi in the United States.- History :...

, Mackie

Mackie

Mackie is a brand of the United States-based company LOUD Technologies. The Mackie brand is used on professional music and recording equipment, such as mixing consoles, loudspeakers, and DAW control surfaces....

, Carvin

Carvin

This article refers to a French commune. For the guitar manufacturer see Carvin Corporation. For the late New Orleans political consultant see Jim Carvin.Carvin is a commune in the Pas-de-Calais department in the Nord-Pas-de-Calais region of France....

, Dolby Laboratories

Dolby Laboratories

Dolby Laboratories, Inc. , often shortened to Dolby Labs, is an American company specializing in audio noise reduction and audio encoding/compression.-History:...

, AKM, et. al