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3 Level Audio Power Indicator:
Battery-operated 3 LED
display that connect it to loudspeaker output
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30 DDm to +30 DDm Audio Level
Meter: circuit with
balanced input and adjustable gain to drive
needle type VU meter, uses special amplifier
module from Op-Amp Labs |
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Analog LED Bar VU Meter:
built around discrete components
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Audio LED VU Meter:
built around discrete components
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Audio tone VU Meter:
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Audio VU Meter: |
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Digital Volume Control:
based on DS1669 Digital Pot IC
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Digital volume control has log
taper: 04/11/2002
EDN - Design Ideas / Digital potentiometers
provide a compact and convenient way to
attenuate audio-amplifier signals. However, most
such potentiometers suffer from at least one
flaw: a nonlogarithmic step increment. To avoid
this problem, a user must usually step. |
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High Resolution Volume unit Meter
Simplifies CD Recording:
06/21/2001 EDN-Design Ideas / One of several
circuits in this PDF) CD digital-recording decks
typically have peak-reading-only volume-level
meters. This feature is adequate to prevent
clipping but does a poor job of reading the
average volume, or loudness, level. A
high-Resolution, average- (not peak-) reading
volume-unit meter produces an accurate reading
of loudness. |
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LED Audio UV Monitor:
logarithmic scale with3 dB steps, based in
LM3915 IC |
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LED Bar VU Meter:
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LED Barograph Driver: Fair
Warning: this site has pop-up ads |
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Mono VUMeter I: |
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Precision Audio MilliVoltmeter:
Measures10mV to50Volt RMS in eight ranges Simply
connect to your Avo-meter set @50�A range |
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Sound Level Meter:
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Three Level Audio Power Indicator:
Battery-operated Three LED display that connect
it to loudspeaker output |
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Understanding Peak Reading Meters:
includes1-example circuit diagram
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VU & PPM Audio Metering:
circuits using analog needle meters
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VU Meter:
5 led VU meter, in PDF format, includes circuit
board, text in Finnish |
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VU Meter Amplifier:
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VU Stereo Meter:
will indicate the volume level of the audio
going to your speakers by lighting up LEDs,
based on LM3915 IC |
