1. Reid Porter

2. First Acoustic recording In 1857, Edouard-Leon Scott de Martinville invented the phonautograph Edouard made a device that could record sound waves that passed threw the air

3. The first electrical record The advent of electrical recording in 1925 improved recorder process Electrically powered phonographs were introduced in 1930

4. Multitrack recording First developed by German audio engineers in 1943 The first stereo recordings had been made in the 1930s on disk 2-track recording was rapidly adopted for modern music in the 1950s Three-track recorders remained in widespread commercial use until the mid-1960s F i r s t d e v e l o p e d b y G e r m a n a u d i o e n g i n e e r s 19431943 2 - t r a c k r e c o r d i n g w a s r a p i d l y a d o p t e d f o r m o d e r n m u s i c i n t h e 1 9 5 0 s 1950s1950s 1950s1950s

5. First magnetic recorder Curt Stille developed the electronic amplification in the 1920’s The telegraphone evolved into wire recorders which were popular for recording voices and was developed in the 1940’s going into the 1950’s

6. Recording on film The first attempts to record sound to an optical medium happened around 1900 In 1923 Lee de Forest applied for a patent to record to film This was the dominant technology from the 1930s through the 1960s and still used today

7. Photoengraving 1877 in spring a inventor named Charles Cros suggested that the process could be reversed using photoengraving In some early jazz recordings a block of wood was used in place of the bass drum first used in 1857

8. Digital Recording The first digital audio recorders were reel-to-reel decks introduced by companies such as Denon in 1972, Soundstream in 1979 and Mitsubishi The ADAT machine is capable of recording 8 tracks of digital audio onto a single VHS video tap in 1991 In 2005 hard disk recording takes two forms

9. Further developments By the late 1960s, disk reproducing equipment became so good that audiophiles soon became aware that some of the noise audible Albums were released both in stereo and quadrophonic format in the 1970s