Gradually increase tempo over a clip?

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Hi. I'm new to DAWs, as this question will no doubt make clear. I'm using T7 on Windows 10 if that matters. I have the bundled Melodyne Essential 4 and Elastique working as stretch processors and they also show up as plugins.

I'd like to take an audio file and have the tempo accelerate at a constant rate from about 80% original speed near the beginning to 100% or 110% near the end. I understand a little about how automation works, so I spent a few hours trying to use automation for this but no go. I don't find an automation parameter for tempo or speed when I add Elastique as a plugin to that track. And the bundled Melodyne is just for pitch, I think.

Maybe this is altogether the wrong approach, or maybe I need a plugin that I don't have. Any suggestions are welcome. Thank you for your time.

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Do you want the entire song (the edit) to accelerate, or just a clip inside the song?

If you want the whole song, just use the tempo bar, after setting the stretch algorythm to your time stretch algo of choice.
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Thank you Chico. I overlooked the automation line in the Tempo track. Sadly though, when I add a curve there and play the song back there is no change to the playback speed of the song. I see that the measure markers above the Tempo bar change their spacing, but the playback isn't affected, regardless of whether I light up the automation read or write mode buttons in the transport area. I have selected Elastique Pro as the stretch algorithm in the clip properties. I've also rendered the clip, but of course that made no difference.

I'm attaching a small screen shot showing the automation curve in the Tempo track.

Right now the edit consists of just one audio clip I imported, a Stephane Grappelli recording. Can the Tempo track automation be applied to a clip like that? I hope I'm missing something simple again. If I use the term "speed" rather than "tempo" for what I'm trying to do, does that clarify anything?

Thanks again.
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Select the clip and then the "Loop Properties" tab from the bottom properties panel.
Make sure "Auto-Tempo" and "Auto-Pitch" are enabled.

This allows the clip to synced to the tempo and pitch changes.
It is on my default if clips contain tempo meta-information (such as Acid loops or aiff Apple Loops) but if this is a complete song it's unlikely to have this info.

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Hi dRowAudio.

BAM! Auto Tempo did the trick. Thank you very much for your response. I think I'd have had to give up long ago if I hadn't found this forum where people like you share your experience so freely. My impression so far is that DAWs are amazing, but not for the faint of heart.

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