EddieMata
Agent
- Joined
- Sep 4, 2003
- Messages
- 29
My son and I have made a basic talkline for his school science fair. It consists of : 2 phone sets, 2 jacks, 26' of telephone cable, and various battery holders for AA batteries.
We have been able to make it work fine, 6 volts (4 AA's) provides sound and voice but not best reception. 7.5 volts (5AA's) makes a clearly audible talkline and it improves with additional voltage.
The question is what would be a good way to determine or measure sound levels in order to differenciate voltages? I don't have a sound meter but am willing to purchase one if would assist with his results. Or any suggestions as to how to reflect the findings?
Any input would be appreciated!
THANKS!
Eddie
We have been able to make it work fine, 6 volts (4 AA's) provides sound and voice but not best reception. 7.5 volts (5AA's) makes a clearly audible talkline and it improves with additional voltage.
The question is what would be a good way to determine or measure sound levels in order to differenciate voltages? I don't have a sound meter but am willing to purchase one if would assist with his results. Or any suggestions as to how to reflect the findings?
Any input would be appreciated!
THANKS!
Eddie