updated readme file

README.md

@@ -1,3 +1,92 @@
 ---
 license: mit
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+
+========================================================================================================
+ASVspoof Laundered Database: This database is based on ASVspoof 2019 logical access (LA) eval partition.
+
+The Asvspoof 2019 LA eval database is passed through five different types of additive noise at three 
+different Signal-to-Noise ratio (SNR) levels, three types of reverberation noise, six different re-compression rates, four 
+different resampling factors, and one type of low pass filtering accumulating to a total of 1388.22 
+hours of audio data.
+
+Dataset Creators: Hashim Ali, Surya Subramani, Shefali Sudhir, Raksha Varahamurthy and Hafiz Malik
+
+Dataset Contact: Hashim Ali alhashim@umich.edu
+
+Date Written: 05/29/2024
+
+*** WARNING ***:
+The 'flac' folder contains over 2 million (2065873) files. Open this folder at your own risk.
+
+========================================================================================================
+
+
+1. Directory Structure
+_______________________
+
+--> ASVspoofLauneredDatabase
+    --> flac
+    --> protocols
+	--> Readme.txt
+
+
+2. Description of the audio files
+_________________________________
+
+    The directory flac contain audio files for each type of laundering attack, namely, Noise_Addition, Reverberation, Recompression, Resampling, and Filtering. Each laundering
+    attack (i) has different parameters (j) which are described below in the protocols section. All audio files in this directory are in the flac format.
+
+
+3. Description of the protocols
+_______________________________
+
+    The directory protocols contains five protocol files, one for each laundering attack. 
+
+    Each column of the protocol is formatted as:
+    
+    SPEAKER_ID AUDIO_FILE_NAME SYSTEM_ID KEY Laundering_Type Laundering_Param
+
+   	1) SPEAKER_ID: 		    LA_****, a 4-digit speaker ID
+   	2) AUDIO_FILE_NAME: 	LA_****, name of the audio file
+   	3) SYSTEM_ID: 		    ID of the speech spoofing system (A01 - A19),  or, for bonafide speech SYSTEM-ID is left blank ('-')
+	4) KEY: 		        'bonafide' for genuine speech, or, 'spoof' for spoofing speech
+    5) Laundering_Type      Type of laundering attack. One of 'Noise_Addition', 'Reverberation', 'Recompression', 'Resampling', and 'Filtering'
+    6) Laundering_Param     Parameters for the laundering attack. For example, in the case of Noise_Addition, it can be 'babble_0' where babble is the type of 
+                            additive noise and 0 is the SNR level at which the babble noise is added to the audio signal.
+
+    Note that: 
+   
+   	1) the first four columns are the same as in ASVspoof2019_LA_cm_protocols (refer to the ASVspoof2019 database), where the fourth in the original database
+        is omitted since it is NOT used for LA.
+   	2) Brief description on the Laundering_Param:
+
+        babble_0                    babble noise at SNR level of 0
+        babble_10                   babble noise at SNR level of 10
+        babble_20                   babble noise at SNR level of 20
+        cafe_0                      cafe noise at SNR level of 0
+        cafe_10                     cafe noise at SNR level of 10
+        cafe_20                     cafe noise at SNR level of 20
+        street_0                    street noise at SNR level of 0
+        street_10                   street noise at SNR level of 10
+        street_20                   street noise at SNR level of 20
+        volvo_0                     volvo noise at SNR level of 0
+        volvo_10                    volvo noise at SNR level of 10
+        volvo_20                    volvo noise at SNR level of 20
+        white_0                     white noise at SNR level of 0
+        white_10                    white noise at SNR level of 10
+        white_20                    white noise at SNR level of 20
+        RT_0_3                      Reverberation with RT60 = 0.3 sec
+        RT_0_6                      Reverberation with RT60 = 0.6 sec
+        RT_0_9                      Reverberation with RT60 = 0.9 sec
+        recompression_128k          Compression using bit rate of 128 kbit/s
+        recompression_16k           Compression using bit rate of 16 kbit/s
+        recompression_196k          Compression using bit rate of 196 kbit/s
+        recompression_256k          Compression using bit rate of 256 kbit/s
+        recompression_320k          Compression using bit rate of 320 kbit/s
+        recompression_64k           Compression using bit rate of 64 kbit/s
+        resample_11025              resampling rate of 11025 Hz
+        resample_22050              resampling rate of 22050 Hz
+        resample_44100              resampling rate of 44100 Hz
+        resample_8000               resampling rate of 8000 Hz
+        lpf_7000                    low pass filtering with a cut-off frequency of 7 Khz