Methods and apparatus to collect media identifying data
View Patent ↗Methods and apparatus to collect media identifying data are disclosed. An example method includes collecting audio data through a sound hole. The sound hole has a chamfered opening. The sound hole has an effective length-to-width ratio which is equal to or less than about 1.25 and analyzing the audio data to obtain media identifying data.
1. A method, comprising:
collecting, with an audio sensor, audio data through a sound hole defined by a printed circuit board, the sound hole including a cylindrical portion and a chamfered opening, the sound hole having an effective length-to-width ratio which is equal to or less than about 1.25, wherein a circumference of the chamfered opening at an interface with the cylindrical portion substantially matches a circumference of the cylindrical portion at the interface; and
analyzing, with a processor, the audio data to obtain media identifying data.
2. The method of claim 1 , wherein the analyzing of the audio data includes obtaining at least one of codes or signatures from the audio data.
3. The method of claim 1 , further including time stamping at least one of the audio data or the media identifying data.
4. The method of claim 1 , wherein the chamfered opening is a conical opening defined by an angle of between about 30-degrees and about 60-degrees relative to a centerline of the sound hole.
5. The method of claim 1 , wherein the audio sensor is implemented by a bottom-ported microphone, and the collecting of the audio data through the sound hole includes collecting the audio data with the bottom-ported microphone.
6. The method of claim 5 , wherein the microphone includes a MicroElectro-Mechanical System microphone.
7. The method of claim 1 , further including providing a meter to a panelist, the meter including the sound hole and the chamfered opening.
8. The method of claim 7 , wherein the analyzing of the audio data is performed in the meter.
9. The method of claim 7 , further including exporting the audio data to a remote facility.
10. The method of claim 9 , wherein the analyzing of the audio data is performed at the remote facility.
11. The method of claim 1 , wherein the chamfered opening includes a conical opening.
12. An apparatus, comprising:
a printed circuit board defining a sound hole, the sound hole having a cylindrical portion and a conical portion, an effective length-to-width ratio of the sound hole being equal to or less than about 1.25, wherein a circumference of the conical portion at an interface with the cylindrical portion substantially matches a circumference of the cylindrical portion at the interface; and
an audio sensor coupled to the printed circuit board, the audio sensor to obtain audio data through the sound hole.
13. The apparatus of claim 12 , wherein the audio sensor includes a bottom-ported microphone.
14. The apparatus of claim 12 , wherein the audio sensor includes a MicroElectro-Mechanical System microphone.
15. The apparatus of claim 12 , further including a housing in which the printed circuit board and the audio sensor are positioned.
16. The apparatus of claim 12 , further including an analyzer to analyze the audio data to obtain at least one of codes or signatures from the audio data.
17. The apparatus of claim 12 , further including a time stamper to time stamp at least one of the audio data or media identifying data associated with the audio data.
18. The apparatus of claim 12 , wherein the conical portion is a conical opening defined by an angle of between about 30-degrees and about 60-degrees relative to a centerline of the sound hole.
19. The apparatus of claim 12 , further including a meter to be provided to a panelist, the meter including the sound hole and the conical portion.
20. The apparatus of claim 19 , wherein the meter is to analyze the audio data.
21. The apparatus of claim 19 , further including an exporter to export the audio data to a remote facility.
22. The apparatus of claim 21 , further including an analyzer to analyze the audio data, the analyzer being located at the remote facility.
23. A method, comprising:
forming a sound hole in a printed circuit board, the sound hole having a cylindrical portion and a conical portion, an effective length-to-width ratio of the sound hole being equal to or less than about 1.25, wherein a circumference of the conical portion at an interface with the cylindrical portion substantially matches a circumference of the cylindrical portion at the interface; and
coupling an audio sensor adjacent the cylindrical portion, the audio sensor to obtain audio data through the sound hole.
24. The method of claim 23 , further including positioning the printed circuit board and the audio sensor in a housing.
25. The method of claim 24 , further including providing a meter to a panelist, the meter including the housing.