The KSU-UMD Dataset for Benchmarking for Audio Forensic Algorithms

Details of the microphone used for data collection, acoustic environment in which data was collected, and naming convention used are provided here.

1 - Microphones Used:
The microphones used to collect this dataset belong to 7 different trademarks. Table (1) illustrates the number of used Mics of different trademarks and models.

Table 1: Trademarks and models of Mics
Mic Trademark Mic Model # of Mics
Shure SM-58 3
Electro-Voice RE-20 2
Sennheiser MD-421 3
AKG C 451 2
AKG C 3000 B 2
Neumann KM184 2
Coles 4038 2
The t.bone MB88U 6
Total 22

2- Environment Description:
A brief description of the 6 environments in which the dataset was collected is presented here:
(i) Soundproof room: a small room (nearly 1.5m × 1.5m × 2m), which is closed and completely isolated. With an exception of a small window in the front side of the room which is made of glass, all the walls of the room are made of wood and covered by a layer of sponge from the inner side, and the floor is covered by carpet.
(ii) Class room: standard class room (6m × 5m × 3m).
(iii) Lab: small lab (4m × 4m × 3m). All the walls are made of glasses and the floor is covered by carpet. The lab contains 9 computers.
(iv) Stairs: is in the second floor. The place of recording is 3m × 5m
(v) Parking: is the college parking.
(vi) Garden: is an open space outside the buildings.

3- Naming Convention:
This set of rules were followed as a naming convention to give each file in the dataset a unique name:
(i) The file name is 19 characters long, and consists of 5 sections separated by underscores.
(ii) The first section is of 3 characters indicates the Microphone trademark.
(iii) The second section of 4 characters indicates the microphone model as in table (2).
(iv) The third section of 2 characters indicates a specific microphone within a set of microphones of the same trademark and model, since we have more than one microphone of the same trademark and model.
(v) The fourth section of 2 characters indicates the environment, where
Soundproof room --> 01
Class room --> 02
Lab --> 03
Stairs --> 04
Parking --> 05
Garden --> 06
(vi) The fifth section of 2 characters indicates the language, where
Arabic --> 01
English --> 02
Chinese --> 03
Indonesian --> 04
(vii) The sixth section of 2 characters indicates the speaker.

Table 2: Microphones Naming Criteria
Original Mic Trademark and model --> Naming Convenient
Shure SM-58 --> SHU_0058
Electro-Voice RE-20 --> ELE_0020
Sennheiser MD-421 --> SEN_0421
AKG C 451 --> AKG_0451
AKG C 3000 B --> AKG_3000
Neumann KM184 --> NEU_0184
Coles 4038 --> COL_4038
The t.bone MB88U --> TBO_0088

For example: SEN_0421_02_01_02_03 is an English file recorded by speaker number 3 in the soundproof room using microphone number 2 of Sennheiser MD-421