10-01-2014, 02:12 PM
Decided I would chime in on this as it is an area of much interest to me. This question about different tracks having the same size has much to do with how they are built and what the technology is that determines the file size. I will start with the ladder question.
These files are all built into MP3 compressed audio. The purpose of MP3 is to remove pieces from the audio track that you are not as likely to notice missing. Subliminal audio would defiantly fit this description, but, I will come back to that in a second. MP3 when it was designed initially, it used a CBR (constant bit rate) for encoding. After a while, they implemented a VBR (variable bit rate). The fact that they audio files are the same size tells you that Shannon is using CBR to encode them.
The other reason why they come out to the same size is because they are the same length of time. The final size of the file is determined by two factors. Bit rate and samples collected. Bit rate (16 in the case) determines how many bits of accuracy are used to capture a number that represents that audio file at a certain time. 16 bits allows for 2^16 different numbers to represent that time. Samples per second tells you how many times that bit rate is captured in a second. Now, if you take the samples collected times the bit rate you end up with roughly the final size of the file. There is some meta data like track and what not stored in there as well. Metadata for the MP3 is a fixed size and so even if you put nothing in the title, it just uses that space to store blanks.
The reason these tracks of different sounds end up as the same size as each other is that they are from the same source. In the build process Shannon overlays his subliminal audio on top of the mask audio that is already built. Thus, they have the exact same length and with CBR, that means they are the same size. It is not to say that they don't include any extra data. Any change in file size only means that the source audio length has changed. Since MP3 removes un noticed information, Shannon has to use special encoder settings not to remove the subliminal audio.
maniac360 alluded to something very important in his post that would help you see that they files are not the same. If you took an md5 hash of those files, you could see if they were exactly the same or not. Same file size != same file, but, same md5 hash = same file. If all the surf audio tracks have the same md5 hash for different programs then you have a reason to question Shannon about the authenticity of his programs.
Another thing you can look at is the ultrasonic subliminal tracks. These are interesting because the audio contains nothing but the subliminal voices. You would notice in Shannon's audios that these have volume and are not silent. I've found this not to be true with some of the other audios floating around.
These files are all built into MP3 compressed audio. The purpose of MP3 is to remove pieces from the audio track that you are not as likely to notice missing. Subliminal audio would defiantly fit this description, but, I will come back to that in a second. MP3 when it was designed initially, it used a CBR (constant bit rate) for encoding. After a while, they implemented a VBR (variable bit rate). The fact that they audio files are the same size tells you that Shannon is using CBR to encode them.
The other reason why they come out to the same size is because they are the same length of time. The final size of the file is determined by two factors. Bit rate and samples collected. Bit rate (16 in the case) determines how many bits of accuracy are used to capture a number that represents that audio file at a certain time. 16 bits allows for 2^16 different numbers to represent that time. Samples per second tells you how many times that bit rate is captured in a second. Now, if you take the samples collected times the bit rate you end up with roughly the final size of the file. There is some meta data like track and what not stored in there as well. Metadata for the MP3 is a fixed size and so even if you put nothing in the title, it just uses that space to store blanks.
The reason these tracks of different sounds end up as the same size as each other is that they are from the same source. In the build process Shannon overlays his subliminal audio on top of the mask audio that is already built. Thus, they have the exact same length and with CBR, that means they are the same size. It is not to say that they don't include any extra data. Any change in file size only means that the source audio length has changed. Since MP3 removes un noticed information, Shannon has to use special encoder settings not to remove the subliminal audio.
maniac360 alluded to something very important in his post that would help you see that they files are not the same. If you took an md5 hash of those files, you could see if they were exactly the same or not. Same file size != same file, but, same md5 hash = same file. If all the surf audio tracks have the same md5 hash for different programs then you have a reason to question Shannon about the authenticity of his programs.
Another thing you can look at is the ultrasonic subliminal tracks. These are interesting because the audio contains nothing but the subliminal voices. You would notice in Shannon's audios that these have volume and are not silent. I've found this not to be true with some of the other audios floating around.
