Raising the Frequency (URGENT)

Hello Folks!

I am looking for help on a particular topic for last two years but have not found any so far so joined this web site!

1. Can any one please guide me how to raise the frequency of my voice recording to a particular frequency, say 14 KHz?

I shall be indebted for life to the person who could guide and teach me how to do it correctly.

Regards,

Aman

 

There are various approaches. One: if you Adjust the sample rate up, the audio frequency goes up. If you adjust it to a sample rate too high for the soundcard to play, Convert it back down to a useable sample rate. Adjust Sample Rate changes the audio frequency, Convert Sample Type does not.

Are you trying to make your voice go up in pitch to that high frequency, like Alvin and the Chipmunks? 

If you want to change the frequency of your voice without changing the duration/tempo, pitch shift is more appropriate. But 14 kHz seems to be much too high to make any sense. Although that depends on what do you call "your voice frequency". Normally that would be the fundamental frequency which is typically 100 to 200 Hz. If you want to transpose your voice so that the fudamental frequency will be 14 kHz, not only most tools will fail, but the result would be completely unintelligible. The highest notes sung my sopranos do not exceed 1.5 kHz, if I remember correctly. Even transposing these up to 14 kHz will yield something sounding terrible.

If you mean something other then the fundamental, let us know.

All the above.

Also, 14 kHz is completely inaudible to a significant part of the population.

You'd probably get more useful guidance if you explained exactly what it is you're trying to achieve.

Hello Folks!

I am looking for help on a particular topic for last two years but have not found any so far so joined this web site!

I am a student of brain development and affiliated with some major research work world wide.

As you had asked, my exact desire and dream of achievement is to be ables to make subliminal recordings for my own personal use and I very strictly mean for my own personal use only. To go a step further, I would also like to experiment with silent subliminal recordings which can be made by raising the frequency of your voice recording (subliminal) up to 16.5khz then apply a filter to filter out anything above or below 16.5khz. This way we can end up with a recording that is still playing very loud but you will not hear anything well at least you think your not hearing anything but in fact you really are!

I have been trying for almost years now and for last seven months on Audition 3, but have not reached anywhere. I understand the scientific filter in Audition 3 but still do not know how to raise the frequency of my voice recording first before applying the filter.

I shall be indebted for life to the person who could guide and teach me how to do it correctly.

God Bless you,

indiomystic



 

What does "do it correctly" mean? You've been told two ways of doing it in this thread. If neither is "correct" you need to say how and why before anyone could suggest possibilities that don't have whatever problems you find.

What you want can certainly be done by applying an understanding of single sideband modulation (SSB) and the tools within Audition, use Edit View.

Use the FFT filter to band limit the voice recording. An upper frequency of 5 to 10 kHz should do it.

Go to Generate>tones and generate a sinewave of 16.5 kHz, full scale and the same duration as the voice file. Press Ctrl-C to copy this to the clipboard.

Open the voice file and press Ctrl-Shift-V to mix paste. Select "Modulate" & press OK.

Use the FFT filter to remove everything below 16.5 kHz, leaving only the upper sideband.

You have now shifted the voice upwards by 16.5 kHz.

(You may use a high sampling rate, e.g. 96kHz.)

My dear alanofz,

Greetings to you! I don't have words to express my gratitude for your help and guidance. May God bless you in abundance.

I shall keep you informed once I try it out as guided by your kind self.

Once, Again, thanks Mate!

Indiomystic

Thank you all Audio masters for your guidance.......................I certainly feel like awakened!!! Especially, after I had almost
 given up the hope that I will ever be able to learn the required techniques.

For last two days I have tried achieving my goal countless times, and each time I have come out with many questions.

alanofoz, thank you one more time for all your help; at least I have the idea now that how it is done. But still I need a lot more guidance and help.

1.How to use the FFT filter to band limit the voice recording (with an upper frequency of 5 to 10 kHz)?
            In Audition 3, the FFT window has a graph based solution, that is layman's terminology so please bear; how to build this graph with correct settings?

2. I have been able to generate a sinewave of 16.5 kHz, but I gues I don't know what settings are required to fill in for a full scale 16.5 KHz sine wave?

3. How to use the FFT filter to remove everything below 16.5 kHz, leaving only the upper sideband?

4. Once I achieve all the above mentioned tasks, do I need to than apply a scientific filter too to cut off anything above and below 16.5 KHz?

After the unexpected guidance and help from all the audio masters, my confidence is really high that I too can learn the required techniques and use it in my project. I appeal to all the audio masters to be patient in teaching me as underneath the little knowledge and ignorance lies a vast ocean of passion for learning.

Thank you all and may God bless all.

Humbly yours,

Indio Mystic

1.How to use the FFT filter to band limit the voice recording (with an upper frequency of 5 to 10 kHz)?
            In Audition 3, the FFT window has a graph based solution, that is layman's terminology so please bear; how to build this graph with correct settings?

If you right click on the graph, you will be able enter values. You can also click and drag points on the graph. To delete a point, drag it out of the graph.

Set the filter to passive and frequency scale to logarithmic. Set the frequencies you want to retain to 100%, and those you want to throw out to 0%. Frequency is on horizontal axis.

2. I have been able to generate a sinewave of 16.5 kHz, but I gues I don't know what settings are required to fill in for a full scale 16.5 KHz sine wave?

There is  a slider on the far right. Set it to the top setting (0 dB)

3. How to use the FFT filter to remove everything below 16.5 kHz, leaving only the upper sideband?

See 1. By the way, Audition's help file is pretty infromative.

Thank you so very much indeed, PQ. I will try as you have instructed and keep you updated. And I promise to go through the help files too.

God bless,

Indio Mystic

Greetings and congratulations!!!!!!!!!!!!

Oh my God, I have done it and it is simply incredible!!!!!!!!!!!!!

I can not believe it my self. I had given all hope and after trying for last two years, audio masters forum was my lest gamble.

And honestly, I never expected much. I am a member for life now.

I do not really have the words to express my gratitude to alanofoz, PQ, Graeme, Eric Snodgrass and AndyH.

I shall make a dummy silent subliminal file and post it here for your checking just to confirm that I have followed your instructions  correctly.

I shall be indebted to all you wonderful and knowledgeable people.

May God bless you all.

Hello Friends,

AS promised, here is the feed back. I have been trying various options ever since I came to learn the technique to make silent subliminal recording.

However, the road still seems long!

1. When I make a silent subliminal @ 16.5KHz, most of the times result sounds like tinnitus. Now the problem is when I listen to it with head phones, I have a general feeling of uneasiness in my ears, as if there has been to much pressure on years. Is listening to high frequencies detrimental for ears?

2. How do I adjust the volume correctly of my voice recording so that after raising it to high frequency of 16.5KHz, it is safe for my listening yet the sound reaches the brain effectively?

I have attached a short 30 second mp3 file for your checking where I have a a voice file shifted to 16.5KHz frequency masked underneath another nature sound file.

Please check and let me know if I have been able to make the silent subliminal file correctly and I request you all for your guidance in regard to the best possible method to make subliminal recordings using Adobe Audition 3.

Thanks so much.

Indio Mystic.