0.5 Vpp or 1Vpp?

darw82 · 28th February 2007, 01:50 PM

What is the standard voltage of audio input signal?
0.5Vpp or 1Vpp?

Thank you.

smitten · 28th February 2007, 09:51 PM

Hi!

Used google for you =)

Consumer audio equipment line levels are rated in dBV, and the most commonly used nominal level for such equipment is −10 dBV, which corresponds to a sine wave of about 0.3162 volts RMS. The absolute reference voltage is 1 VRMS [1]. This reference voltage represents 1 milliwatt at 1000 ohms.

Professional audio equipment line levels are rated in dBu, and the most commonly used nominal level for such equipment is +4 dBu, which corresponds to a sine wave of about 1.228 volts RMS. The absolute reference voltage is 0.775 VRMS. This reference voltage corresponds to 1 mW of power at 600 ohms.

http://en.wikipedia.org/wiki/Line_level

You should try it sometime

28th February 2007, 01:50 PM	#1
darw82 diyAudio Member Join Date: Dec 2004 Location: Jakarta	0.5 Vpp or 1Vpp? What is the standard voltage of audio input signal? 0.5Vpp or 1Vpp? Thank you.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

28th February 2007, 09:51 PM	#2
smitten diyAudio Member Join Date: Sep 2006	Hi! Used google for you =) Consumer audio equipment line levels are rated in dBV, and the most commonly used nominal level for such equipment is −10 dBV, which corresponds to a sine wave of about 0.3162 volts RMS. The absolute reference voltage is 1 VRMS [1]. This reference voltage represents 1 milliwatt at 1000 ohms. Professional audio equipment line levels are rated in dBu, and the most commonly used nominal level for such equipment is +4 dBu, which corresponds to a sine wave of about 1.228 volts RMS. The absolute reference voltage is 0.775 VRMS. This reference voltage corresponds to 1 mW of power at 600 ohms. http://en.wikipedia.org/wiki/Line_level You should try it sometime

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)