To do what you suggest, the only solution is your cable channel. Yet, when I mention that before you did not respond about that specifically. Thus, I will assume you don't have access to cable TV or you have cable TV but you're not willing to pay extra to subscribe to one of those channels that cover the live speeches.
Alternative solution as others suggested is Bloomberg...they don't cover all the speeches but they do cover the ones
they think are important although it may not be important to what you're trading. Thus, I've seen often on Bloomberg following a live speech that had no impact on the markets and other times Bloomberg is
not following a live speech that had a huge impact on the markets at the time the speech started.
The latter above is something I'm hinting to you. I don't know what you're trading but different events have an impact on the price action while others have zero impact...depending upon what you're trading and when you're trading it.
Yet, these live speeches are directional indications. Instead, they are volatility indications...letting you know when volatility is entering the markets. This gives you a heads up about position size management and basically tells you that if you need to go to the toilet...hold it until the event has completed if you're interested in trading price action that's volatile.
However, if you're just doing it for academic research reasons (that could be why you were interested in a
free source)...you can easily do that without the live event. Instead, there are websites, international calendars and a news source keep historical dates and times of such events. You can then just correlate the dates and times with your historical data to see the impact of such or lack of impact.
The other solution given to you about free websites that follows the live stream. Once again, they too do not follow all the live speeches. In fact, they follow very few of the speeches.
That's odd that you say that when you can do the exact same via simply reading the website and knowing the time schedule when the speech is schedule to start and end. For example, if the speech is schedule for 4am in the morning...you know something "could" happen around 4am in the morning. In addition, if you've been paying attention to the market in the days
before a speech...if you see the markets hyping the pending speech as being important or something to watch...you know then to be ready to trade around 4am even though you do not have access to the live speech itself.
Note: Live speeches don't give bullish or bearish directional information about the price action. The markets will often do what it wants to do in contrast to the speech. Instead, live speeches tells you the "when" about the change in volatility or supply/demand. That's it.
That's why I'm a little confused why you need access to the actual live speech when you only need to know the schedule of the live speech because it the news has any merits...
Volatility will show up around the time of the live speech and you will see it in the price action on your charts even though you're not actually watching the live speech news on TV, internet or radio.
I've been using international schedule events (e.g. reports, speeches, breaking news, geopolitical events) heavily in my trading for well +15 years to help with the market context of the trading day. Works very well for me although I don't use it to tell me if price is going up or down. As mention above, I use it for many other reasons and I named one particular reason involving position size management.
You really don't need to have access to the live event. You just need to know its schedule time of the event.