We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
Ki;< OBDING NOTES 53
advantage of high starting torque. There is an additional advantage in so far as this type of induction motor is usually cheaper than the former.
Do not make the purchase of a cheap and light construction motor of any description, since the more power one has at one's disposal in home recording the greater the likelihood of obtaining first -class results.
The Microphone. For direct recording the microphone is the first step, and it is no exaggeration to say that the quality of the results obtained under normal conditions depends mostly upon it. Roughly speaking, we may say there are three types of microphone at present on the market, the carbon type, which operates owing to the variation of resistance of closely packed carbon particles, the condenser microphone which depends upon the diaphragm forming one plate of a condenser, and lastly, the moving coil microphone which in principle is the converse of the moving coil loud speaker.
For home recording the carbon microphone practically holds the field, although, as we shall mention later, there is no real reason for this.
It is a significant fact that manufacturers of home recording equipment admit that their greatest difficulty lies in obtaining a good microphone at an economical figure. The amateur recorder who considers his subject seriously should bear this in mind. Although generalizations are dangerous, it is safe to say that practically all the recording equipments on the market can be improved considerably by a replacement of their microphone by a better quality article. It is possible to obtain microphones from a few shillings up to, say. £25. Another curious thing about microphones is that in the cheaper qualities they are by no means a uniform product. The writer has used two microphones of precisely the same make and price, and found one really excellent, while the other was practically useless. With more expensive microphones this variation is not likely to be so great.
Another point in relation to microphones is that whereas quite a cheap instrument will reproduce fairly natural voice it requires a much better job to deal with music. This