0
How do you reduce a line level audio signal to a mic level In a low impedance circuit?
Wiki User
∙ 9y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What is ohms in audio?
An ohm is a measure of resistance to electrical currant. Resistance relates to audio in many ways, like determining how many speakers/monitors you could wire in parallel without risking damage to your amplifier, getting the most power out of your amplifier (as power amplifiers can produce more power into lower impedance loads), or sending a high impedance signal (such as a guitar signal) down a snake to the mixer (a DI box is needed to convert the high impedance signal to one of lower impedance so that high frequency information in the signal is not degraded by the long cable run. The link below will provide you with more information on the subject. Note that the article refers to "impedance" which is the term used for resistance in AC circuits but still measured in Ohms.
What are practical applications of a transformer coupled amplifier?
Well the purpose of the transformer in an amplifier is impedance matching. Lets say the transformer is on the input of a audio amp. Now the amp circuitry has an input impedance (this is important because matching the impedance gives us maximum power transferred from the input signal source to the amp circuit, and that increases performance) and a microphone has an output impedance. So if the microphone is 10,000 ohms and the amp circuit is 500 ohms then the transformer is designed to transform 10,000 ohms to 500 ohms for better signal transfer. If the trans former is on the output of an amplifier the trans former transforms the output impedance of the of the power amp circuit to the input impedance of the load. If the output is a speaker (usually 8 ohms ) and the output impedance of the amp circuit is 1000 ohms then for maximum power transfer the transformer trans forms 1000 ohms to 8 ohms. This was the case using electron tubes. Now with transistors, amplifier circuits can be built with lower output impedances (common collector circuit in a class B power amp) so the costly transformer can be eliminated. Also Audio transformers are made slightly different in design than power transformers. Ausio transformers are designed with higher resistance in the windings to enable a wider frequency response where as power transformers are designed with much lower resistance to keep heating minimized while passing only one power frequency (60 hertz) at large amounts of power. Roger nsc@psu.edu
What is the difference between audio generator and signal generator?
Audio generator will produce some range of frequency and level of a test signal meant for audio. A signal generator will produce a test signal but is a more general classification. For example a audio generator is a signal generator. When you know what type of signal you are looking for, then a signal generator will be called that type of signal. all depends on what you are testing. examples: video -> video signal generator audio -> audio signal generator
What is an audio oscillator?
An electronic oscillator is an electronic circuit that produces a repetitive electronic signal, often a sine wave or a square wave.
What is input impedance of a circuit?
Impedance is the total opposition to current flow. It includes both resistance AND reactance (capacitive and inductive). Impedance varies with frequency, while plain resistance does not. Scroll down to related links and look at: "Different names for the two impedances Z1 and Z2" "Calculation the damping of impedance bridging or power matching an interface connecting Zout and Zin" "Impedance bridging or voltage bridging of two audio units".
What is ohms in audio?
An ohm is a measure of resistance to electrical currant. Resistance relates to audio in many ways, like determining how many speakers/monitors you could wire in parallel without risking damage to your amplifier, getting the most power out of your amplifier (as power amplifiers can produce more power into lower impedance loads), or sending a high impedance signal (such as a guitar signal) down a snake to the mixer (a DI box is needed to convert the high impedance signal to one of lower impedance so that high frequency information in the signal is not degraded by the long cable run. The link below will provide you with more information on the subject. Note that the article refers to "impedance" which is the term used for resistance in AC circuits but still measured in Ohms.
What is analog audio impedance?
To get all the audio voltage from a source to a target without loss you need voltage bridging, that is a relative low output impedance to a higher input impedance. Usualy the input impedance is at least ten times higher then the output impedance.An input impedance is called also a load impedance or an external impedance.An output impedance is called also a source impedance or an internal impedance.
What are the applications of squelch circuit in communications?
A squelch circuit turns off the audio input to the speaker when there is no radio signal being received. This stops the speaker from producing annoying noise when no radio signal is being received.
What is the impedence?
Impedance is the complex form of resistance. Impedance takes into account capacitance and inductance in a circuit as well. Impedance can be represented as resistance as a function of frequency.See link.AnswerImpedance is not a 'complex form of resistance'. It is the vector sum of a circuit's resistance and reactance. In electrical engineering, 'resistance' has a very specific meaning, and cannot be used to denote 'opposition'.
Is an audio signal affected by wire gauge?
Absolutely for maximum power transfer impedance's are to be matched a low wire gauge will insure that the power is not dissipated on the wire as appose in the speakers.
What are practical applications of a transformer coupled amplifier?
Well the purpose of the transformer in an amplifier is impedance matching. Lets say the transformer is on the input of a audio amp. Now the amp circuitry has an input impedance (this is important because matching the impedance gives us maximum power transferred from the input signal source to the amp circuit, and that increases performance) and a microphone has an output impedance. So if the microphone is 10,000 ohms and the amp circuit is 500 ohms then the transformer is designed to transform 10,000 ohms to 500 ohms for better signal transfer. If the trans former is on the output of an amplifier the trans former transforms the output impedance of the of the power amp circuit to the input impedance of the load. If the output is a speaker (usually 8 ohms ) and the output impedance of the amp circuit is 1000 ohms then for maximum power transfer the transformer trans forms 1000 ohms to 8 ohms. This was the case using electron tubes. Now with transistors, amplifier circuits can be built with lower output impedances (common collector circuit in a class B power amp) so the costly transformer can be eliminated. Also Audio transformers are made slightly different in design than power transformers. Ausio transformers are designed with higher resistance in the windings to enable a wider frequency response where as power transformers are designed with much lower resistance to keep heating minimized while passing only one power frequency (60 hertz) at large amounts of power. Roger nsc@psu.edu
How to feed a dipole with a balance to unbalanced transformer?
The dipole side is always 50 ohm. The other side depends on the signal source impedance requirement, like 8 ohms for audio.
Input impedance of voltage amplifier?
In audio the input impedance of an amplifier is between 10 kiloohms and 20 kiloohms.
Will connecting speakers in series cause volume loss as the circuit progresses?
Yes. And it will also present the wrong load impedance (mismatch) at the output of the audio amplifier, with the possibility of damage to the amplifier.
What is the difference between audio generator and signal generator?
Audio generator will produce some range of frequency and level of a test signal meant for audio. A signal generator will produce a test signal but is a more general classification. For example a audio generator is a signal generator. When you know what type of signal you are looking for, then a signal generator will be called that type of signal. all depends on what you are testing. examples: video -> video signal generator audio -> audio signal generator
What is audio Oscillator?
An electronic oscillator is an electronic circuit that produces a repetitive electronic signal, often a sine wave or a square wave.
How sound amplifier circuit works?
A sound (audio) amplifier works by making a larger copy, or series of copies, of a weak signal.
