Add speakerphone experiment, reorganize

README.md

@@ -6,8 +6,42 @@ tags:
 - audio
 pretty_name: Audio Device
 ---
-This dataset is a small corpus of parallel audio clips.
+# Parallel Recordings
+This dataset is a small corpus of audio recorded in parallel.
+This data can be used to quantify the difference in recording quality between different audio devices.
 
-All devices were recording at the same time and at the same distance.
+## Organization
+There are two separate experiments.
+1) Personal Microphone
+2) Speakerphone
 
-This data can be used to quantify the difference in recording quality between different audio devices.
+The original data for both experiments are located in the`full_length_audio` directory.
+
+## Methodology
+Each experiment was performed by recording simultaneously on multiple devices.
+Example sentences were prepared beforehand and read during the simultaneous recording.
+
+### Personal Microphone
+**Devices:**
+* AT8: Audio Technica AT8
+* ATR: Audio Technica ATR4800-USB
+* bltin: Built-In microphone on unknown laptop
+* boya: Boya BY-W4, Ultracompact 2.4GHz Four-channel Wireless Microphone System
+
+Each device was pointed in the same direction toward the speaker. The speaker read sentences at varying distance from the microphones. Here is the following mapping:
+* Indexes 4-13: Distance = 1 inch (2.54cm)
+* Indexes 18-27: Distance = 1 foot (30.48cm)
+* Indexes 30-39: Distance = 1 yard (914.4cm)
+All other indexes correspond to user speaking to themselves at varying and inconsistent distances.
+
+### Speakerphones
+**Devices:**
+* respeaker: SeeedStudio ReSpeaker USB Mic Array
+* jabra: Jabra Speakerphone
+* sanwa: Sanwa Supply 400-MC011
+* yamaha: Yamaha Speakerphone
+* ntt: NTT Advanced Technology FR-1100
+
+Each device was placed in the same location in the center of the room. The speaker read sentences five at a time, moving position each time. The positions were roughly assigned and can be best described as close-rear-left, far-front-left, far-front-right, close-rear-right (in order). The final paragraph was read in the same location as the last 5 sentences (close-rear-right).
+
+The NTT microphone has directionality settings and was set to capture as wide as possible but there are certain angles where complete loss of sound can be observed. This was also recorded originally as a stereo track.

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