JPH0213350U - - Google Patents

Info

Publication number

JPH0213350U

JPH0213350U JP9077288U JP9077288U JPH0213350U JP H0213350 U JPH0213350 U JP H0213350U JP 9077288 U JP9077288 U JP 9077288U JP 9077288 U JP9077288 U JP 9077288U JP H0213350 U JPH0213350 U JP H0213350U

Authority

JP

Japan

Prior art keywords

circuit

detection signal

microphone

amplifies

converts

Prior art date

1988-07-07

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Pending

Links

• Espacenet
• Global Dossier
• Discuss

• 238000001514 detection method Methods 0.000 claims 2
• 238000010586 diagram Methods 0.000 description 3
• 238000007493 shaping process Methods 0.000 description 1