ο»Ώ TO HELP THE VOICE.|1907-08-17|Denbighshire Free Press - Welsh Newspapers Online
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-β– β€” ' CHESTER. MOLD, DENBIGH.…

RHYL, ST. ASAPH, AND DENBIGH.

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%- IT r -fc ^"-n >.rr, SCIENCE…

WHY RUBBER TYRES GET HOT.

AN EYE EXHIBITION.

DENATURED ALCOHOL.

MICROPHONE FIREDAMP DETECTIVE.

WALL-PAPER AND TEMPERAMENT.

TO HELP THE VOICE.

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TO HELP THE VOICE. Experiments by M. Marage ihew that it. is practicable to gauge the acoustic proper- ties of any public hall, and to direct each speaker Low to use the voice to the best ad- vantage. It was found that in a hall where a regular continued sound is produced, there may be heard the primary wave from the source; many diffuse waves returned from the walls, producing resonance; and waves- regularly reflected, giving distinct echoes. The duration of the resonance sound deter- mines whether the acoustic properties are good or bad, the satisfactory condition being where the resonance is sufficiently short to reinforce the sound that produces it without- interfering with the following one. His vowel siren has been used by Marage in studying the resonance sound, and the natural voice has been thus replaced by a. mechanical vibration whose pitch, intensity- and quality, can be determined exactly.

CONCRETE AND STEEL.

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HINTS FOR THE HOME.

I LABOUR - SAVERS.

SLEEPING ALONE.

HOME LIFE. i

'CARE OF BOOTS.

EATING THE 'CRUSTS.

TO BRIGHTEN COLOURS.

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|Cricket.

LLANYCHAN AND DISTRICT CRICKET…

VALE OF CLWYD CRICKET CLUB.

VALE OF CLWYD v. FIELDFARES.

COUNTY CRICKET.

- LLANYCHAN v. MOSTYN PARK.…

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Sanitation at St Asaph. ..