Real Time Varispeed Sound Quality in Samp & WhichSound Forge Version?

gregory-battaglia wrote on 3/10/2025, 11:23 AM

This probably sounds silly but there’s lots of my favorite music which I find can sound more enjoyable when using a pitch or varispeed control to reduce the tempo to between 3 and 7%; sometime as much as ~ 9%-even though the pitch is not preserved.

Circa 2010, someone gifted me Samplitude PRO X, though which I only used for applying real time pitch down shifting when playing my rips of CD tracks. But that was on an old Windows XP desktop and I would need to have it on my Windows 10 HP ZBook. I still have the Pro X product key to download it but don’t want to risk that old version not working and then having to uninstall it and thereby losing that big block of non-rewritable storage space on my system SSD drive.

Samplitude is notorious for its steep learning curve but at least I was able to find and use the real time pitch control knob from its transport control interface easily enough.

Having used Pro X forever, it’s tempting to go back and get the new version, assuming the varispeed's easily accessible. Samplitude’s varispeed always sounded very transparent to me. But is that same sound quality shared among all versions of Sound Forge, such as https://www.magix.com/us/music-editing/sound-forge/sound-forge-audio-cleaning-lab/ ?

I doubt that most here would have much need for a tool like real time varispeed, especially since it's not intended to preserve pitch while changing the tempo.

But do both Samplitude and Sound Forge Audio Cleaning have a real time "tape deck like" varispeed slider in the transport window that has zero impact on sound quality?

Comments

SP. wrote on 3/10/2025, 11:06 PM

@gregory-battaglia You can also change the tempo in Samplitude by simply adding tempo markers throughout your track.

I'm pretty sure internally Samplitude is using Zplane Elastique and basic resampling for real-time stretching and pitchshifting, so nothing special since a lot of DAWs are using Zplanes algorithms. Since Audio Cleaning Lab is based on Samplitude I suspect it uses the same algorithms.

I don't understand what you mean that your SSD isn't rewritable. Each cell in an SSD is rewriteable easily tens of thousand of times. This is enough for a decade of usage and more. Modern Windows 10 and 11 writes to the SSD all the time via it's background tasks. That's why it's almost unusable if it is installed on HDD.

I recommend you install the free demo versions and try them out of you don't want to use your old version of Pro X.

gregory-battaglia wrote on 3/11/2025, 1:22 PM

@gregory-battaglia You can also change the tempo in Samplitude by simply adding tempo markers throughout your track.

I'm pretty sure internally Samplitude is using Zplane Elastique and basic resampling for real-time stretching and pitchshifting, so nothing special since a lot of DAWs are using Zplanes algorithms. Since Audio Cleaning Lab is based on Samplitude I suspect it uses the same algorithms.

I don't understand what you mean that your SSD isn't rewritable. Each cell in an SSD is rewriteable easily tens of thousand of times. This is enough for a decade of usage and more. Modern Windows 10 and 11 writes to the SSD all the time via it's background tasks. That's why it's almost unusable if it is installed on HDD.

I recommend you install the free demo versions and try them out of you don't want to use your old version of Pro X.

Aren’t SSDs “write once” storage devices, like USB flash drives? Google AI says, “Before writing new data, SSDs must erase the existing data in a block-and they can only write to blank pages”.

But don’t SSDs have only a limited number of these “write once” blank pages?

HDDs write, read and erase data on the space of a magnetically coercive platter(s).

And HDDs can’t erase and re-write to the same space indefinitely, unlike SSDs?

Of course, HDDs have their drawbacks as being much more prone to data loss if hit with high physical shocks, or other suffer internal electro-mechanical malfunctions or if exposed to high external magnetic fields. And, like SSDs, data loss may occur if not re-energized over long periods. That’s why my standalone NAS and file backup routines use a combination of SDDs and HDDs.

But the current system drives on my desktop and laptop pcs are SSDs. So, that’s why I’ve long endeavored to avoid loading all but program files on them.

Regarding my old copy of Samplitude, it’s actually Pro X Suite. So, even when I installed it on my ancient Dell desktop back in 2014, since its system HDD was only ~ 60 GB, I took care to avoid loading all of those libraries of sounds and virtual instruments which I never have use for anyway.

I have my serial number and original email address and password; registration date: 08/11/2014

But how can I verify that this old version will run on my Windows 10 HP Fury 15 ZBook without any problems?

 

johnebaker wrote on 3/11/2025, 2:41 PM

@gregory-battaglia

Hi

. . . . Aren’t SSDs “write once” storage devices, like USB flash drives? . . . .

No, for an SSD which has Windows installed on them Windows constantly reads and writes various support files needed for it to function and support programs for reading/writing files to the SSD.

. . . Google AI says, “Before writing new data, SSDs must erase the existing data in a block-and they can only write to blank pages” . . . .

SSDs data storage cells are used following the same 'rules' as the hard drives magnetically coercive platter, ie using / reusing data blocks/storage cells that are free or have been flagged as deleted.

. . . . But don’t SSDs have only a limited number of these “write once” blank pages? . . . .

SSDs use a form of flash memory to which data is written, transferred, and erased electronically and silently, there are no moving mechanical parts. They do not lose the data when the power is off, unlike computer RAM memory,

They do have a number read/write cycles before possible failure of a 'storage cell' may occur. However, this depends on how much data is written per day and the total amount of data written.

For personal use you can expect a SSD drive to last up to 10 years.

. . . . current system drives on my desktop and laptop pcs are SSDs. So, that’s why I’ve long endeavored to avoid loading all but program files on them. . . . .

My computer has 2 SSD drives one for Windows and programs, the second is the 'work disc'. I also have 3 hard drives fitted internally for backups and longer term storage of 'finished' projects.

In the event of a failure with the Windows/programs 'system' SSD, I can restore the drive to full working again usually within 24 hrs taking into account obtaining a new SSD drive. I backup the system drive regularly with 'imaging software'.

The only write once storage devices used by computers are CD (CD-R) , DVD (DVD-R/+R) and Blu-ray (BD-R) discs.

. . . . how can I verify that this old version will run on my Windows 10 HP Fury 15 ZBook without any problems? . . . .

If the old software was running on Windows 8, then there should be no issue on Windows 10, Windows 11 is a different matter.

John EB
Forum Moderator

Last changed by johnebaker on 3/11/2025, 2:43 PM, changed a total of 1 times.

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SP. wrote on 3/11/2025, 2:42 PM

@gregory-battaglia You can download Samplitude from here https://www.magix.com/int/support/pro-audio-downloads/ and try it on your system. If it isn't working correctly you can simply uninstall it again. This will free up the space on your SSD. You can also change the directories during the installation and install Samplitude on another storage device.

Technically, the computer will try to use all storage cells equally, so if you delete Samplitude Pro X, the storage will be marked as deleted but not automatically overwritten. This can happen sooner or later or never. It can very well be, that the computer will first use storage cells which are currently free and unused. Maybe that is why you are thinking, that the SSD will fill up? This is done so you don't only have wear and tear on the first half of your SSD in case you never fill it up more than 50%.

gregory-battaglia wrote on 3/11/2025, 3:21 PM

@gregory-battaglia You can download Samplitude from here https://www.magix.com/int/support/pro-audio-downloads/ and try it on your system.

That's where I can find and download my old copy of Pro X?

But if for some reason I can't download it or won't install without errors, can I use my product serial number to get the new version of Pro X at the lower upgrade price?

 

 

SP. wrote on 3/11/2025, 3:49 PM

@gregory-battaglia Yes, you should be able to get the price reduced upgrade to Pro X8. The Magix website will check your user account for an older version if you buy an upgrade. Since you already have Pro X registered, it should work fine.

You also don't need to have Pro X installed. Pro X8 will install and work without Pro X. If you want, you can also install the free trial version of X8 and try it for 30 days.