User Tools
demonstrations:3_oscillations_and_waves:sound_waves:interference_with_two_sound_sources:start
Differences
This shows you the differences between two versions of the page.
| Next revision | Previous revision | ||
|
demonstrations:3_oscillations_and_waves:sound_waves:interference_with_two_sound_sources:start [2019/02/14 23:33] 127.0.0.1 external edit |
demonstrations:3_oscillations_and_waves:sound_waves:interference_with_two_sound_sources:start [2020/03/13 20:57] (current) demoroom |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| ====== Interference With Two Sound Sources ====== | ====== Interference With Two Sound Sources ====== | ||
| - | {{tag> needs_review untagged unlocated}} | + | {{tag> oscillations_and_waves speakers interference acoustics located}} |
| <WRAP box right> | <WRAP box right> | ||
| Line 11: | Line 11: | ||
| ===== Description ===== | ===== Description ===== | ||
| - | Interference patterns Classes Used: Phys 153, 101, SCIENCE ONE | + | Consists of a pair of speakers hooked up to the amplifier and a function generator. |
| - | + | ||
| - | + | ||
| ===== Purpose ===== | ===== Purpose ===== | ||
| - | |||
| To demonstrate the interference pattern produced by two sound sources. | To demonstrate the interference pattern produced by two sound sources. | ||
| - | |||
| - | |||
| ===== Apparatus ===== | ===== Apparatus ===== | ||
| - | + | * [[demonstrations:3_oscillations_and_waves:sound_waves:speakers:start|A pair of speakers]] | |
| - | 2 speakers, function generator, amplifier | + | * [[demonstrations:9_equipment:oscilliscopes_and_function_generators:function_generator:start|Function generator]] |
| - | + | * [[demonstrations:9_equipment:av_receiver_amplifier:start|Amplifier]] | |
| ===== Setup ===== | ===== Setup ===== | ||
| - | + | - Place the speakers on a cart at least two feet apart. You will have to adjust this distance according to your frequency | |
| - | Place the speakers on a cart at least two feet apart | + | - Attach the function generator output to the Amplifier and connect the amplified outputs from the amplifier to the input at the back of the stereo labeled "Phono Right" |
| - | You will have to adjust this distance according to your frequency | + | - Ensure the stereo is set to play the phono input |
| - | Attach the function generator output to the Amplifier and connect the amplified outputs from the amplifier to the input at the back of the stereo labeled "Phono Right" | + | - Attach the two cables from the back of the stereo to the speakers as shown in the picture |
| - | Ensure the stereo is set to play the Phono input | + | - Test the speakers to check if the polarity is right (they only work one way) |
| - | Attach the two cables from the back of the stereo to the speakers as shown in the picture below | + | - Select a frequency on the function generator and turn up the volume on the stereo |
| - | Test the speakers to check if the polarity is right (they only work one way) | + | - The table (or cart) can be turned so that any interference pattern produced in the direction of the speakers can be swept across the audience producing audible maxima and minima |
| - | Select a frequency on the function generator and turn up the volume on the stereo | + | |
| - | A frequency of about 1000 or 2000 Hz gives noticeable pattern although superimposed on the interference pattern are the nodes and antinodes form stationary waves produced by reflection in the lecture theater. | + | |
| - | The table (or cart) can be turned so that any interference pattern produced in the direction of the speakers can be swept across the audience producing audible maxima and minima. | + | |
| - | + | ||
| - | Updated on: 01/07/15 | + | |
| ===== Notes ===== | ===== Notes ===== | ||
| + | In the new Hebb theater (as of 2020), a frequency of 600 Hz with three feet of separation between the speakers seems to show a noticeable effect. | ||
| <WRAP group> | <WRAP group> | ||
| Line 64: | Line 52: | ||
| </WRAP> | </WRAP> | ||
| <WRAP tablewidth 100%> | <WRAP tablewidth 100%> | ||
| - | | **Location** | ---- | | + | | **Location** | T1 | |
| | **Maker** | Unknown | | | **Maker** | Unknown | | ||
| | **Current State** | Working | | | **Current State** | Working | | ||
demonstrations/3_oscillations_and_waves/sound_waves/interference_with_two_sound_sources/start.1550187203.txt.gz · Last modified: 2019/02/14 23:33 by 127.0.0.1
Page Tools
