I Hear My Camera Go Twice Why?
Audio Solutions Question of the Week: Is It Normal To Hear Soft Music Coming Straight From the Surface of a Record, Even if the Record Is Non Playing Through Speakers?
Question: Is it normal to hear soft music coming directly from the surface of a record, fifty-fifty if the record is not playing through speakers?
Answer: Yes, this is normal. It is commonly referred to as "surface noise" or "needle chatter," though in that location is no universally accepted term for the miracle. "Surface noise" is also used to refer to the pops and clicks that are sometimes heard while playing a record, but that is non what we're talking about hither. For our purposes, "surface noise" means sound of the recording that is heard directly from the surface of the record equally the record is beingness played. Permit's look into why this occurs.
Start, remember that the record and turntable concepts go back to the plough of the 20thursday century. And recall that sound is just a serial of vibrations. Old Victrola players, for case, used a needle (aka stylus) that ran through the grooves of a moving record, creating aural sound every bit the stylus vibrated within the record grooves. Sound recordings were originally made using the same concept. Sounds (vibrations) moved a needle (aka cutting stylus) on a record, causing cuts or grooves in the tape surface. When played back, a needle moved through the cut grooves, causing vibrations that resulted in noise approximating the original sound. This is a very simplified explanation of a pretty sophisticated process.
The racket that is heard from the surface of a record is the vibration from the stylus riding in the record groove. Originally, this audio was captured by funneling the sound into a hollow tube that contained a flexible diaphragm and that fed into a flared horn. Victrola players allowed sound to be naturally amplified through this diaphragm and horn. Nosotros encounter this same concept used today in modernistic turntables. Modern turntables take those same vibrations from the stylus, merely use them to create an electrical bespeak. This signal is so amplified and "corrected" co-ordinate to the RIAA equalization curve before existence output from the turntable. Next, the sound is amplified once more with a power amplifier and sent out to the speakers. The speakers vibrate in relation to the amplified sound bespeak. This vibration causes sound, which is picked upwards by the human ear. Just if you lot listen closely, you can still hear the vibration sounds coming from the tape surface itself. As we indicated before, this surface dissonance is perfectly normal.
Hopefully this brief look into turntable development and operation not but helped explicate surface noise but also gave you a better appreciation for the technical expertise that goes into creating each Audio-Technica turntable. If you have any further questions, feel free to contact the Sound Solutions Department.
Source: https://www.audio-technica.com/en-us/support/audio-solutions-question-of-the-week-surface-noise/
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