. The Bell System technical journal . urnished through the courtesy of the Victor Talking Machine Company, Camden, New Jersey or instrumental playing. As the use of high quality electric apparatuswith associated amplifiers has a very distinct advantage over theacoustic method, they have been adopted for the recording part of theprocess. Fig. la shows a picture of a group of artists recording by ^ Physical Criterion for Determining the Pitch of a Musical Tone, H. FletcherPhys. Rev., Vol. 23, No. 3, March, 1924. RECORDING AND REPRODUCING OF MUSIC AND SPEECH 499 means of the sound power directly,
. The Bell System technical journal . urnished through the courtesy of the Victor Talking Machine Company, Camden, New Jersey or instrumental playing. As the use of high quality electric apparatuswith associated amplifiers has a very distinct advantage over theacoustic method, they have been adopted for the recording part of theprocess. Fig. la shows a picture of a group of artists recording by ^ Physical Criterion for Determining the Pitch of a Musical Tone, H. FletcherPhys. Rev., Vol. 23, No. 3, March, 1924. RECORDING AND REPRODUCING OF MUSIC AND SPEECH 499 means of the sound power directly, while Fig. lb shows a record beingmade by the same artists with the electric process. It will be noticed in Fig. la that the artists are grouped very closelyabout the horn. In the case of the weaker instruments such as violins,it has been possible to use only two of standard construction. The restof the violins are of the type known as the Stroh violin which is adevice strung in the manner of a violin but so arranged that the bridge. Fig. lb—Picture of the same orchestra shown in Fig. la, but recording by the electric process. This picture was furnished through the courtesy of the Victor Talking Machine Company, Camden, New Jersey vibrates a diaphragm attached to a horn. The horn is directed towardthe recording horn, as shown by the player in the foreground. With such an arrangement of musicians, it is very difficult to arousethe spontaneous enthusiasm which is necessary for the production ofreally artistic music. In Fig. lb the musicians are sitting at ease morenearly in their usual arrangement and all are using the instrumentswhich they would use were they playing at a concert. Furthermore,the microphone is now sufficiently far away from the orchestra to re-ceive the sound in much the manner that the ears of a listener in theaudience would receive it. In other words, it picks up the sound afterit has been properly blended with the reflections from the walls of theroom. It
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
