Category Archives: Code

Assignment 3: Convolution

So this is a patch where I have tried to convolve different impulse responses with a recording of beatboxing that I obtained from freesound.com . The following is the link of the same on SoundCloud: https://soundcloud.com/spandy-sharma/beatbox-original

For the impulse recordings, portable recorder was used and then the audio files were modified using audacity by normalizing, amplifying, converting and trimming wherever required. Since I feel that the sound quality changed while I attempted to record my screen, I am also pasting the patch in a compressed form below each screen recording.

1.

My first convolution was with an impulse response created by dropping a stack of heavy books in Hammerschlag Hall on a carpeted floor at late night. The original recording of the IR can be found at: https://soundcloud.com/spandy-sharma/booksoundhall-ir-1 . The outcome can be seen below. It gives a feeling of the beatboxing happening in a hallway which is what I aimed to achieve.

<pre><code>
———-begin_max5_patcher———-
1724.3oc6ZszaaiCD9bJP+OHniKbbIodWzC8vdo.cuzaKJJBnsosYWIQuRz1
IsXyu8cHonrjijihibB5h0EwVlOzn4ad8ww8mu8MW4NSbKqz048Ne04pq9IL
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oQHID7TzDGOh+zfINgdpuPHSQGDao7tT8Sjqqdj+4suQ8I7wjmMHT5Txjtcp
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h2vq+dMd3fQmhgWcP7on504Q16KS4.N9MIVS0CiBe0vkOewvE+y.WBHswE+W
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gNhAf3AIvvwCQQCVfiTN6AogiXMhgHttMfU07oa1riUTVsCij.VRe2zbhnIl
uyyMe2y78Bl5bxlsXX23RK.FIRfNx1BCGiaCq59ilYYQ9Vt8P0JcUIZMeji4
aTyNJ6NCeEitUyWtMfT2IE0Q2A0f0YS8a0Gkkh75dE..zeHxoyEMntMaUGsl
AdE4auJAezsb1J3HJo0aqEecKWR2UEzE7F+97W41PNnojDDNITIBOTRLx2bE
LzQBqZaX69hCvHcSih8IDeyUdHjOoysQZnVsdqwBgCJYnIRhZQcuPrQTTyZe
pWxgcrUJpUO0jOfZ9DqecArjF7PqFWe7+5c1NVn1gvbbw+joNjS8+Ko5wuPY
jK4+nxHigyfEjfPwGLYz4yY4xVVfXR.NRgeQw3XroObIA919vMlpxdUnhSlH
WTt4PWedk7wAm5XRhumoGjwAAQlqHD7QNQtrTV1wvVTLJAqcWiQHBN13K5gC
iOZycA4Cy48UL.aPI.ZGbA5.1KBo8fhIQgdFvAGCn7kLVyBVszZPpwDk7Iww
3JkN.64geld0pcBe7unNsvpG
———–end_max5_patcher———–
</code></pre>

2.

The second IR was created by a single, loud hit of a pair of scissors on a metal pan in the staircase of Hunt Library. The impulse response was trimmed using audacity. The original IR can be found at: https://soundcloud.com/spandy-sharma/metalpan-ir-2 and the outcome is attached below. This also created an interesting metallic kind of beat boxing.

<pre><code>
———-begin_max5_patcher———-
1724.3oc6ZszaaiCD9bJP+OHniKbbIodWzC8vdo.cuzaKJJBnsosYWIQuRz1
IsXyu8cHonrjijihibB5h0EwVlOzn4ad8ww8mu8MW4NSbKqz048Ne04pq9IL
xU5wTibkcfqbyn2NOkVpWnaNauX12cmTMmjcqTO9BVJ8Nm.DpdJwVYJSJuaC
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oQHID7TzDGOh+zfINgdpuPHSQGDao7tT8Sjqqdj+4suQ8I7wjmMHT5Txjtcp
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pWxgcrUJpUO0jOfZ9DqecArjF7PqFWe7+5c1NVn1gvbbw+joNjS8+Ko5wuPY
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WTt4PWedk7wAm5XRhumoGjwAAQlqHD7QNQtrTV1wvVTLJAqcWiQHBN13K5gC
iOZycA4Cy48UL.aPI.ZGbA5.1KBo8fhIQgdFvAGCn7kLVyBVszZPpwDk7Iww
3JkN.64geld0pcBe7unNsvpG
———–end_max5_patcher———–
</code></pre>

3.

The third IR was created by mixing a self produced imitation of the tune from the cup song “You’re Gonna Miss Me” by Lulu and the Lampshades. I slowed down the rate of the beat using audacity and normalized it a bit. I wanted to check out what would happen if one of the easiest beats was mixed with the beatboxing audio file and the result was somewhat weird. I would have called the convoluted signal noise except that if we really observe it, we can find a pattern which makes it seem like one of the machines with gears in the large factories that look somewhat like this:

The original IR can be found at: https://soundcloud.com/spandy-sharma/cupsong-slow-ir-3 and the outcome can be seen below:

<pre><code>
———-begin_max5_patcher———-
1724.3oc6ZszaaiCD9bJP+OHniKbbIodWzC8vdo.cuzaKJJBnsosYWIQuRz1
IsXyu8cHonrjijihibB5h0EwVlOzn4ad8ww8mu8MW4NSbKqz048Ne04pq9IL
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3JkN.64geld0pcBe7unNsvpG
———–end_max5_patcher———–
</code></pre>

4.

At last, the final convoluted outcome was created by combining a song obtained from Freesound.com and our beatboxing audio file. The IR was normalized and trimmed at some places. The result gives a feeling of suspense. The original IR can be found at : https://soundcloud.com/spandy-sharma/orchestral-cartoon and the convoluted signal is given below:

<pre><code>
———-begin_max5_patcher———-
1724.3oc6ZszaaiCD9bJP+OHniKbbIodWzC8vdo.cuzaKJJBnsosYWIQuRz1
IsXyu8cHonrjijihibB5h0EwVlOzn4ad8ww8mu8MW4NSbKqz048Ne04pq9IL
xU5wTibkcfqbyn2NOkVpWnaNauX12cmTMmjcqTO9BVJ8Nm.DpdJwVYJSJuaC
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pWxgcrUJpUO0jOfZ9DqecArjF7PqFWe7+5c1NVn1gvbbw+joNjS8+Ko5wuPY
jK4+nxHigyfEjfPwGLYz4yY4xVVfXR.NRgeQw3XroObIA919vMlpxdUnhSlH
WTt4PWedk7wAm5XRhumoGjwAAQlqHD7QNQtrTV1wvVTLJAqcWiQHBN13K5gC
iOZycA4Cy48UL.aPI.ZGbA5.1KBo8fhIQgdFvAGCn7kLVyBVszZPpwDk7Iww
3JkN.64geld0pcBe7unNsvpG
———–end_max5_patcher———–
</code></pre>